100+ Free SCA Brewing Practice Questions

The SCA Brewing Skills program is a three-level progressive certification from the Specialty Coffee Association — Foundation (5 points), Intermediate (10 points), and Professional (25 points). Foundation requires only a written MCQ exam (60% pass mark). Intermediate and Professional require both a written exam and a practical skills assessment scored by an Authorized SCA Trainer. Topics span the SCA Gold Cup Standard, Brewing Control Chart, Seven Essential Elements of Brewing, water quality, brew methods, grind, and recipe calculation. Points accumulate toward the SCA Coffee Skills Diploma (100 points required across CSP modules).

The SCA Gold Cup Standard defines ideal filter coffee as having an extraction yield of 18–22% (the percentage of the coffee's dry mass dissolved into the brew) and a brew strength of 1.15–1.35% TDS (total dissolved solids). The standard brew ratio is 55 g of coffee per 1,000 g of water (approximately 1:18), with an acceptable tolerance of ±10% (49.5–60.5 g/L). These parameters are plotted on the SCA Brewing Control Chart. Coffee below 18% extraction is under-extracted (sour, thin); above 22% is over-extracted (bitter, harsh).

The SCA recognizes seven essential elements that control filter brew quality: (1) Water quality — mineral content, pH, and absence of off-flavors; (2) Brew ratio — grams of coffee per unit of water; (3) Grind setting — particle size and distribution; (4) Brew time — total contact time between water and grounds; (5) Water temperature — target 92–96°C (197–205°F) at the grounds; (6) Turbulence/agitation — physical mixing of water and grounds; (7) Filtration — the filter medium (paper, metal, cloth) separating brew from grounds.

Foundation written exam: 60% pass mark (written only — no practical component). Intermediate: written exam 70% pass + practical skills assessment pass mark. Professional: written exam 80% pass + practical skills assessment 80% pass. All levels are assessed by an Authorized SCA Trainer (AST). Candidates who fail one component may be eligible to retake only the failed component, subject to the AST's retake policy.

The SCA Brewing curriculum covers percolation devices (V60, Chemex, Kalita Wave, commercial batch drip brewers), immersion devices (French press with ~4-minute steep, AeroPress as an immersion-pressure hybrid, siphon/vacuum pot), and cold brew (cold-water immersion over 8–24+ hours). Culturally common brewers such as the Turkish ibrik/cezve may also be included depending on the learner's region. The Foundation level introduces automatic drip, manual pour-over, and culturally common brewers.

The SCA water quality standard for brewing recommends: total hardness 50–175 mg/L CaCO₃ (target approximately 75–100 mg/L), alkalinity approximately 40 mg/L CaCO₃, pH approximately 7 (range ~6.5–7.5), and total dissolved solids (water supply TDS) of 75–250 mg/L. Calcium and magnesium ions are essential for extracting flavor compounds. High alkalinity neutralizes coffee acidity (flat cup). High hardness causes scale. Chlorine and chloramine should be removed by carbon filtration.

A coffee refractometer measures the refractive index of a small brew sample and converts it to a TDS percentage. To use it: let the brew sample cool slightly (or use a manufacturer-specified temperature), place a few drops on the prism, close the cover, and read the TDS. Then calculate extraction yield using the formula: Extraction Yield % = (TDS% × actual brew weight in grams) ÷ dry coffee dose in grams × 100. Plot TDS and extraction yield on the Brewing Control Chart to determine whether you are in the Gold Cup zone and what adjustment is needed.

Begin with the SCA Gold Cup Standard and Brewing Control Chart (memorize the 18–22% / 1.15–1.35% TDS / 55 g/L targets). Then study the Seven Essential Elements and how each variable affects extraction yield and TDS. Practice the extraction yield formula with real brews using a refractometer and scale. Learn the sensory descriptors for each quadrant of the chart. Study each brew method (V60, Chemex, Kalita Wave, batch drip, French press, AeroPress, siphon). Review SCA water standards and water treatment concepts. For Professional, practice the 'aim, measure, treat' water management framework and recipe modification worksheet analysis.