Why do biscuits turn crunchy when pulled out of oven?

When biscuits are baking, the water inside them turns into steam. This steam creates a pressure inside the biscuits, causing them to puff up and become light. When the biscuits are removed from the oven, the steam inside them condenses back into water. This water causes the biscuits to shrink and become crunchy.

Here are some additional factors that can affect the crunchiness of biscuits:

* The type of flour used. Biscuits made with all-purpose flour will be crispier than biscuits made with bread flour or cake flour.

* The amount of baking powder used. Biscuits made with more baking powder will be crispier than biscuits made with less baking powder.

* The temperature of the oven. Biscuits baked at a higher temperature will be crispier than biscuits baked at a lower temperature.

* The length of time the biscuits are baked. Biscuits baked for a longer period of time will be crispier than biscuits baked for a shorter period of time.

By controlling these factors, you can create biscuits that are exactly the way you like them.