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The temper test, before you commit a batch

Updated October 2026

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The test Do it every batch, before committing Watch the clock as well as the look Retest after it has been sitting Record the result with the batch Learn what each chocolate should look like References

Tempering can fail silently, and the failure only becomes visible after you have molded everything. The test takes two minutes.

The test

Dip a knife, a spatula or a strip of parchment into the tempered chocolate, set it aside at room temperature, and watch it. Correctly tempered chocolate sets within a few minutes, firm, glossy and without streaks. Badly tempered chocolate stays soft, sets dull, or shows streaks and patches.

Do it every batch, before committing

The cost is two minutes and a smear. The cost of skipping it is a full batch of molded pieces that will not release, will not shine and will bloom within days, plus the chocolate and the time that went into them.

Watch the clock as well as the look

Slow setting is itself a sign, even if the result eventually looks acceptable. A properly tempered chocolate sets quickly because the right crystals are already present and propagating, so the time taken is part of the reading.

Retest after it has been sitting

Chocolate held at working temperature for a long time can drift out of temper, and a batch that passed an hour ago may not pass now. Retesting before a second run is the habit that prevents the second half of a day being wasted.

Record the result with the batch

Pass or fail, and what you did if it failed. When a bloom complaint arrives weeks later, the temper record is what distinguishes a tempering problem from a storage one, and those have completely different fixes.

Learn what each chocolate should look like

Dark, milk and white set differently and have different gloss, so the reference for a pass is specific to the chocolate you are using. Keeping a correctly tempered sample of each as a comparison makes the test much more reliable than judging it from memory.

References

21 CFR 163.130, Milk chocolate: not less than 10 percent by weight of chocolate liquor, not less than 3.39 percent milkfat and not less than 12 percent total milk solids. law.cornell.edu

21 CFR 163.124, White chocolate: not less than 20 percent cacao fat, not less than 3.5 percent milkfat, not less than 14 percent total milk solids, and not more than 55 percent nutritive carbohydrate sweetener. law.cornell.edu

Written from federal regulation and the published physical chemistry of sugar and cocoa butter, not from a laboratory. The chocolate standards of identity are specific and the sugar confectionery names are not, which is the main thing to carry away. Anything here is a starting point for a conversation with your state department of agriculture, not a determination that you comply.