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Key Facts: Pufferfish Cuisine Craftsman Exam

60 items

Written CBT question count

Q-Net Craftsman qualification standard

60 minutes

Written CBT duration

Q-Net examination timetable

60% (36/60)

Written and practical passing threshold

HRD Korea grading regulations

~60 minutes

Hands-on practical exam duration

Q-Net 복어조리기능사 qualification listing

KRW 14,500

Written exam registration fee

Q-Net jmCd=7914 fee schedule (checked 2026-09-20)

KRW 35,100

Practical exam registration fee

Q-Net jmCd=7914 fee schedule (checked 2026-09-20)

2 years

Written pass exemption validity

National Technical Qualifications Act Enforcement Decree Art. 21

복어조리기능사 (Pufferfish Cuisine Craftsman) is South Korea's statutory qualification for commercial pufferfish preparation, certified by HRD Korea under the Food Sanitation Act. The official CBT written exam features 60 four-choice questions in 60 minutes (passing score: 60/100, 36 correct; fee: KRW 14,500), followed by an approximately 60-minute work-type practical (fee: KRW 35,100). OpenExamPrep provides 100 independent English practice questions across toxicology, species identification, decontamination, and culinary techniques.

Sample Pufferfish Cuisine Craftsman Practice Questions

Try these sample questions to review concepts for the Pufferfish Cuisine Craftsman exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary chemical and biological nature of tetrodotoxin (테트로도톡신), the lethal poison found in pufferfish?
A.A low-molecular-weight non-protein neurotoxin with an aminoperhydroquinazoline ring structure
B.A heat-labile bacterial exotoxin composed of heavy and light polypeptide chains
C.A lipid-soluble polyether marine ciguatoxin produced by dinoflagellates
D.A paralytic organophosphate compound that irreversibly inhibits acetylcholinesterase
Explanation: Tetrodotoxin (TTX) is a low-molecular-weight non-protein marine neurotoxin featuring a unique aminoperhydroquinazoline backbone with a guanidinium group. Because it is non-proteinaceous, it is unaffected by digestive proteases and standard thermal cooking. It is one of the most potent natural non-peptide neurotoxins known.
2How does standard culinary thermal processing (boiling, steaming, frying, or baking) affect tetrodotoxin in pufferfish tissues?
A.Boiling at 100°C for 10 minutes completely denatures the toxin and renders it harmless
B.The toxin is highly heat-stable and resists normal boiling and cooking temperatures, decomposing only above 300°C
C.Deep-frying in vegetable oil at 180°C neutralizes over 95% of toxic potency
D.Autoclaving at 121°C for 15 minutes reliably destroys all tetrodotoxin molecules
Explanation: Tetrodotoxin exhibits exceptional heat stability (내열성) and is not inactivated by conventional cooking methods such as boiling, simmering, grilling, or deep-frying. Complete thermal decomposition requires temperatures exceeding 300°C, meaning that thermal cooking cannot compensate for defective or incomplete toxic organ debridement.
3What is the stability of tetrodotoxin when exposed to acidic culinary environments such as vinegar, citrus dressings, or gastric acid?
A.It is rapidly hydrolyzed and neutralized by dilute acetic acid within minutes
B.It precipitates as an insoluble and biologically inactive salt in acidic solutions below pH 4.0
C.It is highly acid-resistant, retaining its full toxic activity in gastric juice (pH 1.5–2.0) and citrus marinades
D.It oxidizes into a non-toxic carboxy derivative when brought into contact with ascorbic acid
Explanation: Tetrodotoxin possesses strong acid stability (내산성) and remains fully biologically active in acidic media, including mammalian gastric hydrochloric acid (pH 1.5–2.0) as well as culinary vinegar (초절임) and citrus ponzu sauces. It cannot be detoxified by marinating fish in vinegar or acidic juices.
4Which symptom is universally recognized as the earliest clinical manifestation of tetrodotoxin poisoning following ingestion?
A.Severe bloody diarrhea and lower abdominal cramping
B.Complete bilateral hearing loss and visual hallucinations
C.Sudden grand mal epileptic seizures and high fever
D.Paresthesia and numbness of the lips, tongue tip, and oral mucosa (입술과 혀끝의 저림 및 마비)
Explanation: The initial hallmark symptom of tetrodotoxin poisoning is numbness and tingling (paresthesia) around the mouth, lips, and tip of the tongue, often developing within 10 to 45 minutes after ingestion. This occurs because sensory nerve endings in the oral mucosal tissues are directly exposed to the rapidly diffusing neurotoxin.
5What is the approximate minimum lethal dose (치사량) of tetrodotoxin for an adult human weighing 60 kg?
A.1 to 2 mg (equivalent to approximately 10,000 mouse units / MU)
B.50 to 100 mg
C.500 to 1,000 mg
D.5 to 10 grams
Explanation: The minimum lethal dose (MLD) of tetrodotoxin for an average adult human is estimated at approximately 1 to 2 mg (or roughly 10,000 Mouse Units). Because a single gram of highly toxic pufferfish ovary or liver can contain several hundred to thousands of mouse units, ingesting even a minute morsel can deliver a fatal dose.
6In the official bioassay standard for tetrodotoxin, how is one Mouse Unit (1 MU / 1 마우스 단위) defined?
A.The amount of toxin that causes 50% paralysis in a group of ten mice over 24 hours
B.The amount of toxin required to kill a 20-gram male mouse in 30 minutes following intraperitoneal injection
C.The amount of toxin that reduces mouse heart rate by 50% within 10 minutes
D.The minimum concentration of toxin that inhibits bacterial growth on a nutrient agar plate
Explanation: In statutory food sanitation toxicology, 1 Mouse Unit (MU) is precisely defined as the amount of tetrodotoxin that will kill a 20-gram male albino mouse in exactly 30 minutes after intraperitoneal injection. This bioassay has historically formed the benchmark for measuring toxicity in pufferfish tissues.
7What specific chemical antidote or antitoxin is currently available for clinical administration during tetrodotoxin poisoning?
A.Atropine sulfate combined with pralidoxime (2-PAM)
B.Equine polyvalent tetrodotoxin antitoxin serum
C.No specific pharmacological antidote or antitoxin currently exists
D.Dimercaprol (BAL) chelating suspension
Explanation: There is currently no approved pharmacological antidote, neutralizing antibody, or specific antitoxin for tetrodotoxin. Clinical treatment relies entirely on supportive life-support measures, particularly prompt mechanical ventilation and maintenance of blood pressure until the toxin is cleared metabolically and renally.
8Under Article 51 of South Korea's Food Sanitation Act (식품위생법), what legal requirement must a food service professional fulfill before preparing and selling pufferfish?
A.Complete a 4-hour online hygiene safety seminar administered by the local community health center
B.Submit an annual chemical testing certificate for imported frozen pufferfish fillets to the tax authority
C.Maintain five years of continuous apprentice experience in a certified Japanese raw-fish restaurant
D.Obtain the national Pufferfish Cuisine Craftsman (복어조리기능사) qualification and acquire a cook's license issued by the local Si/Gun/Gu mayor
Explanation: Under South Korea's Food Sanitation Act, commercial establishments preparing and serving pufferfish must employ a cook licensed specifically in pufferfish cuisine. The candidate must pass the national Pufferfish Cuisine Craftsman technical examination administered by HRD Korea and obtain a formal cook's license (조리사 면허) from the head of the local municipal government (시·군·구청장).
9What is the primary cellular mechanism through which tetrodotoxin produces flaccid paralysis and respiratory failure in humans?
A.Selective physical occlusion of voltage-gated sodium channels (전압 의존성 나트륨 통로) on excitable axonal and muscle membranes
B.Competitive antagonism of nicotinic acetylcholine receptors at the motor endplate
C.Irreversible blockade of L-type voltage-dependent calcium channels in the cardiac myocardium
D.Excessive stimulation of gamma-aminobutyric acid (GABA-A) receptors in the cerebral cortex
Explanation: Tetrodotoxin selectively binds to the outer vestibule (Site 1) of voltage-gated sodium channels (Nav1.4, Nav1.6, etc.) on neuronal axons and skeletal muscle sarcolemma. Its positively charged guanidinium group lodges into the selectivity filter, blocking the inward influx of sodium ions (Na+), which halts action potential propagation without affecting resting membrane potential or potassium channels.
10According to the Fukuda clinical staging of pufferfish poisoning, which set of symptoms characterizes Stage 1 (제1도) intoxication?
A.Complete flaccid quadriplegia and loss of all deep tendon reflexes
B.Perioral paresthesia, lingual numbness, mild nausea, vomiting, and headache, with pupillary reflexes intact
C.Severe dysarthria, motor ataxia, and inability to stand without assistance
D.Cyanosis, severe hypotension, fixed dilated pupils, and respiratory arrest
Explanation: Stage 1 (Grade 1) tetrodotoxin intoxication is characterized by sensory disturbances around the mouth and tongue (perioral paresthesia), followed by light numbness in fingertips, accompanied by gastrointestinal symptoms such as nausea, vomiting, and stomach discomfort, while motor power and cranial reflexes remain mostly preserved.

About the Pufferfish Cuisine Craftsman Exam

Pufferfish Cuisine Craftsman (복어조리기능사) is South Korea's premier national technical qualification for commercial pufferfish processing and gastronomy, administered by HRD Korea under the Food Sanitation Act (식품위생법). Because pufferfish organs harbor lethal tetrodotoxin, Korean law strictly restricts commercial pufferfish preparation to certified and licensed cooks. The written CBT evaluates tetrodotoxin stability and neurology, morphological differentiation between the 21 edible species and lethal prohibited lookalikes, precise evisceration workflows, and foundational dishes including translucent 복어회 sashimi, 복어껍질초회 and 복어죽. Passing candidates proceed to the work-type practical exam in 복어조리 실무, made up of a 1-minute parts-identification task and a 55-minute cooking task. OpenExamPrep provides an independent 100-question English MCQ study adaptation, not an official translation or practical dissection simulation.

Exam sponsor: HRD Korea (한국산업인력공단 / Q-Net) / Ministry of Food and Drug Safety (식품의약품안전처). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The official written exam is a 60-question, 60-minute CBT covering tetrodotoxin toxicology, pufferfish species identification, decontamination sanitation, and culinary methods (no per-subject 과락; 36 of 60 correct to pass). The practical in 복어조리 실무 has two parts: a 1-minute written identification of pufferfish parts (복어 부위 감별) and a 55-minute hands-on task covering debridement plus 복어회, 복어껍질초회 and 복어죽. OpenExamPrep provides 100 practice questions covering the complete technical syllabus.

Time Limit

60 minutes for written CBT; 1 minute (parts identification) plus 55 minutes (cooking) for the work-type practical

Passing Score

Written: 60 points or more out of 100 (at least 36 of 60 correct); Practical: 60 points or more out of 100

Exam / Certification Fees

KRW 14,500 written / KRW 35,100 practical (total KRW 49,600)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25 of 100 questions

Tetrodotoxin Pharmacology & Food Safety (테트로도톡신 특성 및 식품위생)

Chemical stability of tetrodotoxin, thermal and acid resistance, voltage-gated sodium channel blockage, clinical intoxication stages, emergency first aid, and Food Sanitation Act licensing mandates.

25 of 100 questions

Pufferfish Species Identification & Toxic Organs (복어 품종 감별 및 유독 부위)

Morphological taxonomy of the 21 edible species under the Korean Food Code (자주복, 참복, 검복, 까치복, 은밀복, 흑밀복 and others) versus species excluded from food use (국매리복, 별복, 흰점꺼끌복), and organ-specific toxicity profiles of ovaries, liver, skin, flesh, and testes.

25 of 100 questions

Toxic Organ Removal & Decontamination Techniques (제독 처리 및 위생관리)

Surgical evisceration sequences, avoiding gallbladder and ovary rupture, spinal blood-line flushing under running water, knife sanitation, and municipal toxic waste compliance.

25 of 100 questions

Pufferfish Culinary Dishes & Practical Standards (복어 조리 실무 및 요리 기준)

Paper-thin sashimi slicing (tessa / usuzukuri), decorative plate arrangements, skin needle removal and scalding (yubiki), clear broth (bokeo-jiri), spicy stew, deep-fried chunks, and charred fin sake (hirezake).

Preparing for the Pufferfish Cuisine Craftsman Exam

What You Need to Know

  • Passing score: Written: 60 points or more out of 100 (at least 36 of 60 correct); Practical: 60 points or more out of 100
  • Assessment: The official written exam is a 60-question, 60-minute CBT covering tetrodotoxin toxicology, pufferfish species identification, decontamination sanitation, and culinary methods (no per-subject 과락; 36 of 60 correct to pass). The practical in 복어조리 실무 has two parts: a 1-minute written identification of pufferfish parts (복어 부위 감별) and a 55-minute hands-on task covering debridement plus 복어회, 복어껍질초회 and 복어죽. OpenExamPrep provides 100 practice questions covering the complete technical syllabus.
  • Time limit: 60 minutes for written CBT; 1 minute (parts identification) plus 55 minutes (cooking) for the work-type practical
  • Exam / certification fees: KRW 14,500 written / KRW 35,100 practical (total KRW 49,600) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
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  • Use our AI tutor for tough concepts

Pufferfish Cuisine Craftsman: Suggested Study Strategy

1Memorize tetrodotoxin physicochemical properties: TTX is a heat-stable, acid-stable aminoperhydroquinazoline neurotoxin that resists 100°C boiling and stomach acid. It selectively blocks voltage-gated sodium channels on excitable nerve and muscle membranes without an available clinical antidote.
2Distinguish edible vs. toxic lookalikes: Thoroughly master the 21 edible species authorized by the MFDS Food Code. Pay special attention to dangerous impostors, especially the lethal prohibited silver puffer lookalike Lagocephalus lunaris (독밀복) whose muscle tissue contains deadly levels of tetrodotoxin, compared to the edible Lagocephalus wheeleri (밀복).
3Master the anatomical toxicity distribution: Memorize which organs are lethal (난소/ovaries and 간장/liver are almost universally violent poisons), which are non-toxic in permitted species (정소/testes/milt and properly washed muscle), and which species have toxic skin (e.g., 복섬/Takifugu niphobles).
4Commit the precise evisceration sequence to memory: Snout incision, skin stripping from head to tail, eye and gill excision, careful belly incision without piercing viscera, spine blood-line scraping, and running cold-water flushing for over 30 minutes to wash away all trace heme and toxin.
5Understand classical culinary terminology and plating styles: Master terms such as tessa (복어회 / translucent sashimi), usuzukuri (thin slicing), kiku-mori (chrysanthemum arrangement), botan-mori (peony arrangement), yubiki (parboiled julienned skin), and hirezake (charred fin sake infusion).

Frequently Asked Questions

What is the Pufferfish Cuisine Craftsman (복어조리기능사) qualification?

It is a national technical qualification certified by HRD Korea under South Korea's Food Sanitation Act. It certifies that a culinary professional possesses the expert anatomical knowledge and surgical butchery skills needed to safely decontaminate toxic pufferfish and prepare edible dishes without endangering public health.

Why is a specialized national license required to prepare pufferfish in South Korea?

Under Article 51 of the Food Sanitation Act (식품위생법), restaurants preparing and serving pufferfish must employ a cook certified and licensed specifically in pufferfish cookery. This strict statutory requirement exists because pufferfish contains tetrodotoxin, a potent non-protein neurotoxin with a high human fatality rate that cannot be destroyed by standard cooking.

How is the official examination structured?

The written exam is a 60-minute Computer-Based Test (CBT) consisting of 60 four-choice multiple-choice questions. Candidates must score at least 60% (36 out of 60 correct) to pass. There is no per-subject minimum score floor (과락). Passing candidates advance to the work-type practical exam in 복어조리 실무, which since the 2020 task revision has two parts: a 1-minute written identification of pufferfish parts (복어 부위 감별), then a 55-minute task in which the candidate debrides a whole fresh pufferfish and produces 복어회 (sashimi), 복어껍질초회 (vinegared skin salad) and 복어죽 / 조우스이 (porridge).

What happens if an internal organ ruptures during the practical examination?

In the work-type practical examination, puncturing or rupturing toxic organs such as the gallbladder (담낭) or ovary (난소), failing to segregate toxic waste into the designated container, or failing to remove spinal blood results in immediate disqualification (실격/오작) with a score of zero, as it simulates a fatal food poisoning hazard in commercial service.

What are the official fees for the exam in 2026?

According to official Q-Net listings for qualification code jmCd=7914, the CBT written examination fee is KRW 14,500 and the hands-on practical examination fee is KRW 35,100, bringing the total examination registration cost to KRW 49,600.

How does this OpenExamPrep practice bank assist candidates?

OpenExamPrep provides an independent 100-question English-language MCQ study adaptation covering the full written examination syllabus. It offers bilingual technical terminology, in-depth clinical and culinary explanations, and detailed rationales for each distractor. It is an educational study aid, not an official Q-Net translation or practical dissection simulator.