Does Gravy Thicken as It Cools?

The answer

Yes, for the flour-thickened make-ahead gravy King Arthur documents: it may leave the stove slightly thin and become thicker as it cools.

Why

King Arthur’s tested recipe cooks a roux with stock, then warns that the gravy may look a little thinner than expected at the end of cooking because it thickens while cooling. The same recipe says gravy reheated too thick can be loosened with additional stock or water. The claim belongs to that style of gravy and should not be turned into a universal promise that any watery gravy will set.

When it is usually OK

• The gravy follows a recipe that explicitly anticipates thickening during cooling.
• The sauce has already completed its prescribed cooking stage.
• You are judging the consistency before deciding whether additional thickener is needed.

When you should not

• Do not assume gravy that missed the recipe’s thickening stage will necessarily recover by cooling.
• Do not keep adding starch solely because the hot sauce looks slightly thinner than its final serving texture.

Risks and exceptions

• King Arthur’s recipe warns that gravy may thicken further as it cools.
• A reheated gravy can become too thick for serving, for which King Arthur suggests stock or water.

Best practice

Assess the gravy at the stage specified in your recipe. If it is King Arthur-style make-ahead gravy, allow for the documented thickening during cooling before making additional texture changes.

Alternatives

• If reheated gravy is too thick, use a little stock or water as King Arthur describes.
• If gravy remains genuinely too thin, consult the existing MAPIANCE article on that distinct problem.

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