Measure the preparation you actually use.

Name the preparation stage

A yield test measures the relationship between an input and a specified usable output. Write that preparation before weighing anything. Whole produce to trimmed raw flesh, raw meat to cooked slices and canned product to drained solids are different tests.

The description determines how the factor can be used. A peeling yield should not be applied to a supplier pack that is already peeled. A raw trimming yield should not be treated as a cooked yield. If the recipe crosses several stages, keep each stage visible or measure the complete process on a clearly defined basis.

Historical USDA Handbook 102 tables provide useful preparation-specific references, including ranges and limited-data flags where reported. They do not guarantee the yield of a current delivery with a different grade or specification. Use them as context for your own measurement.

Prepare the measurement

Use a suitable scale and account for the container tare. Record the ingredient, supplier specification, received condition and preparation method. Keep the purchase price and net quantity available so the physical yield can be translated into cost.

Choose a batch representative of the work you intend to standardize. An unusually damaged delivery or unusually careful trial can be informative, but it should not silently become the normal factor. Record why a test differs from routine production.

Keep useful by-products separate from discarded material. A trim item used elsewhere is not necessarily waste, but its cost treatment needs a documented decision. Do not assign the full purchase cost independently to every output.

Weigh the input and usable output

Measure the purchased input on the defined basis. Perform the normal preparation, then weigh the usable output. Record trim, rejected material and other outputs when they help reconcile the difference.

Divide usable output by input to get the yield fraction, then multiply by 100 for a percentage. The corresponding loss percentage is 100% less yield when the process only removes material. If cooking adds water or another ingredient, use an appropriate finished-batch model rather than forcing that process into a trim-loss formula.

The app's ingredient yield describes usable purchase material and is bounded at 100%. Finished recipe yield is separate and can represent a cooked batch whose mass is greater than a dry ingredient input. That separation prevents added water from being mistaken for a cheaper purchase unit.

Work a trimming example

All quantities and prices here are illustrative assumptions. They do not describe a universal yield for any ingredient.

The purchase cost is $40 ÷ 8 = $5 per kg. Edible cost is $40 ÷ 6.4 = $6.25 per kg. The same result comes from dividing $5 by the 0.80 yield fraction. A 160 g edible portion therefore costs $1.00 in this scenario.

The purchase did not cost more after trimming. The original payment is distributed across less usable output. That distinction helps explain why comparing only the purchase price per kilogram can favor an ingredient that is more expensive in the form actually served.

Compare products on equivalent output

Suppose a second illustrative product costs $44 for the same 8 kg purchase weight but yields 7.2 kg of usable output. Its edible cost is about $6.11 per kg. Despite the higher purchase price, its usable cost is lower than the first example's $6.25.

That comparison is incomplete until the output specifications match. Check quality, cut, preparation work and the role of any by-product. A lower edible ingredient cost does not automatically mean the total operating choice is better.

If the prepared product reduces paid work, distinguish an actual payroll reduction from released capacity. A faster preparation may be useful even if the schedule does not change, but the benefit should be described accurately.

Keep cooking yield separate when needed

A cooked component can lose moisture or fat after trimming. Cost the ingredients entering the batch, then measure the finished output. Divide batch cost by that output to obtain the cost per cooked unit used in a parent recipe.

For example, a sauce can have a fixed ingredient cost but different final mass depending on reduction. A dish using a measured cooked sauce quantity should be charged from the finished sauce cost, not from a guessed sum of raw volumes.

Do not apply the same cooking loss twice. If the batch yield already reflects the finished output, the cost per cooked unit includes that effect. Adding another shrink factor at the parent recipe can duplicate the adjustment.

Interpret variation without hiding it

Repeat the test when the supplier specification, preparation method or received condition changes. Keep individual results so the team can see variation rather than replacing every test with an unexplained average.

A broad range in a reference source is a reason to inspect the preparation match. It does not justify selecting whichever point gives the most attractive recipe cost. Choose the working factor from the evidence relevant to your operation and label provisional assumptions clearly.

Investigate large changes in measured yield. A different trim standard, scale problem or product condition can explain them. The measurement should lead to a specific check rather than a general claim that the kitchen is wasting food.

Enter the result and verify a portion

In the ingredient record, enter the purchase pack, price and measured edible yield. Use edible quantities in recipes that depend on that yield. If a recipe instead specifies purchase-basis quantity, avoid applying an unrelated edible conversion to it.

Calculate a sample portion by hand and compare it with the ledger. Keep units consistent and retain precision through the calculation. Then test a purchase-price change to confirm that the same yield relationship reaches every affected recipe.

Use the AP-to-EP calculator for the direct unit-cost conversion and the portion-from-case calculator for a serving calculation. The ingredient reference index keeps source preparations visible, while the browser ledger lets you replace those references with your own measured values. Export the updated ledger when the test has been adopted.

Retain the cost allocation

If a preparation produces several useful outputs, write down how the purchase cost is assigned between them. The yield test establishes physical quantities; it does not automatically determine the commercial value of each output. A consistent allocation can support comparison over time, while a changing unexplained allocation can make one recipe appear cheaper at another’s expense. Keep the combined assigned cost reconcilable to the original purchase and identify any value attributed to material that has not yet found a practical use.