2.2 Purchasing, Receiving & Inventory
Key Takeaways
- A purchase specification is a written description of an item's required quality, grade, size, and packaging so competing vendors quote on identical products and deliveries can be checked against a standard.
- Par level is the amount of an item that should be on hand to cover demand until the next delivery; ordering brings stock back up to par, preventing both stockouts and over-ordering.
- Receiving means matching each delivery to the purchase order and invoice for quantity, price, and quality, and verifying cold TCS foods arrive at 41 degrees F or below before accepting them.
- FIFO (First In, First Out) rotates older stock to the front so it is used before newer stock, minimizing spoilage and the risk of serving expired food.
- Under rising prices, FIFO values ending inventory near current cost and produces a lower cost of goods sold, while LIFO (Last In, First Out) produces a higher cost of goods sold and a lower, older-valued ending inventory.
Specifications and Purchasing Methods
Good purchasing starts with a purchase specification: a written description of an item's required quality, grade, size, and packaging (and sometimes brand, count/size, packing medium, and acceptable temperature on delivery). Specs let competing vendors quote on the same product so bids are comparable, and they give the receiving clerk an objective standard to inspect against. A spec for canned tomatoes, for example, might read "diced, U.S. Grade A (Fancy), #10 can, 6/case, packed in juice."
Common purchasing methods:
| Method | How it works | Typical use |
|---|---|---|
| Competitive bid (formal) | Multiple approved vendors quote on identical written specs; lowest responsive bid wins | Large/public purchases |
| Informal (quote) buying | Phone or email quotes compared | Smaller, routine orders |
| Prime vendor / contract | Most volume goes to one vendor at agreed pricing | Streamlined ordering |
| Group purchasing organization (GPO) | Facilities pool volume to negotiate lower prices | Healthcare systems |
Par Levels
A par level is the quantity of an item that should be on hand to cover demand until the next delivery. You order enough to bring stock back up to par. The order quantity = par level minus what is on hand. Set par too low and you face stockouts and emergency buying at premium prices; set it too high and you tie up cash, crowd storage, and invite spoilage. Par levels should flex with the menu cycle, census, and delivery frequency.
Receiving Checks
Receiving is a control point, not a formality. The receiving clerk must:
- Match the delivery to the purchase order and invoice for quantity, price, and quality
- Check cold TCS foods are 41 degrees F or below and frozen foods are solidly frozen
- Inspect for damage, pests, signs of thawing/refreezing, and broken or swollen packaging
- Reject out-of-spec or unsafe items at the dock and note the rejection on the invoice
Never sign off on a delivery without inspecting it; signing accepts both the goods and the charges.
Storage: Dry and Cold
Proper storage preserves both safety and quality. Key parameters tested on the exam:
- Dry storage: 50-70 degrees F, 50-60% relative humidity, all items at least 6 inches off the floor, away from walls, chemicals stored separately and below food
- Cold storage: refrigerators 41 degrees F or below, freezers 0 degrees F or below
- Vertical storage order in the cooler is by minimum safe internal cooking temperature: ready-to-eat on top, then seafood, whole cuts of beef/pork, ground meat, and raw poultry on the bottom so juices cannot drip onto items that are cooked less
- Always rotate by FIFO (First In, First Out): older stock to the front, used before newer stock, cutting spoilage and the risk of serving expired food
Inventory Valuation: FIFO vs LIFO
FIFO and LIFO are also inventory valuation methods that change reported food cost when prices move:
| FIFO (First In, First Out) | LIFO (Last In, First Out) | |
|---|---|---|
| Cost flow | Oldest costs leave first | Newest costs leave first |
| In rising prices: COGS | Lower | Higher |
| In rising prices: ending inventory | Valued near current cost | Valued at older, lower cost |
| Foodservice use | Standard (matches physical rotation) | Rarely used for perishables |
FIFO is the foodservice standard because it matches how perishable stock physically rotates. The exam may ask both the safety meaning (rotation) and the financial meaning (valuation) of FIFO, so keep the two senses straight.
Perpetual vs Physical Inventory
- Perpetual inventory: a running record updated every time stock moves in or out; gives real-time counts but can drift from reality
- Physical inventory: an actual hand count of what is on the shelf, usually monthly
A physical count verifies and corrects the perpetual record and supplies the ending inventory figure used to calculate monthly food cost. The two methods work together: perpetual for day-to-day control, physical to true it up and feed the cost-of-food-consumed calculation.
Inventory Turnover and Security
Inventory turnover measures how many times stock is used and replaced in a period: turnover = cost of food used / average inventory value. A healthy dietary operation typically turns dry and frozen stock a few times per month; low turnover signals over-ordering, dead stock, and spoilage risk, while very high turnover risks stockouts. Storerooms should be locked and access-controlled; only designated staff issue product, ideally against requisitions. These controls deter theft, one of the hidden drivers of a rising food cost percentage that the exam links back to inventory discipline.
Putting It Together: The Purchasing Cycle
| Stage | Control activity |
|---|---|
| Forecast need | Use the menu, census, and par levels |
| Write/select specs | Define quality so bids are comparable |
| Order to par | Order quantity = par minus on hand |
| Receive | Match PO/invoice; check temps and quality; reject out-of-spec |
| Store | Correct temperature, FIFO, off the floor, raw below ready-to-eat |
| Issue | Locked storeroom, requisitions, FIFO |
| Count | Physical inventory feeds the food-cost calculation |
Each stage is both a cost control and a food-safety control, which is why purchasing, receiving, and inventory are tested together.
A dietary manager rotates stock so that older canned goods are pulled to the front and used before newly delivered cases. Which method is being used?
During a period of rising food prices, how does using FIFO rather than LIFO affect the dietary department's financial figures?
A refrigerated delivery of raw chicken arrives at the dock measuring 48 degrees F. What is the correct receiving action?