Why do cakes loose the rise when cooling?

* Evaporation: As a cake cools, the moisture in the cake evaporates, causing the cake to shrink. This shrinkage can cause the cake to lose its rise.

* Cooling of the air cells: When a cake is baking, the air cells in the cake expand due to the heat. As the cake cools, the air cells shrink, causing the cake to lose its rise.

* Gelatinization of starch: As a cake cools, the starch in the cake begins to gelatinize, which means that it absorbs water and becomes firm. This can also cause the cake to lose its rise.

There are a few things that you can do to help prevent cakes from losing their rise when cooling:

* Bake the cake at the correct temperature: Baking a cake at too high of a temperature can cause the cake to rise too quickly and then fall when it cools. Conversely, baking a cake at too low of a temperature can prevent the cake from rising properly in the first place.

* Cool the cake slowly: Allowing a cake to cool slowly can help to prevent the air cells from shrinking too quickly, which can help to prevent the cake from losing its rise.

* Use a baking pan with straight sides: Baking a cake in a pan with straight sides can help to prevent the cake from shrinking as it cools.

By following these tips, you can help to prevent cakes from losing their rise when cooling.