How long past the expiration date can you safely use cake mixes?

It's generally not recommended to use cake mix past its expiration date. While the mix itself won't go bad in the way food spoils, the ingredients inside may lose their potency over time.

Here's why:

* Leavening agents (baking powder/soda) lose effectiveness: These are crucial for making the cake rise, and their potency diminishes over time. This could result in a dense, flat cake.

* Flavorings can fade: The extracts and other flavorings in the mix can lose their strength, making your cake taste less vibrant.

* Moisture content can change: The mix may become dry and crumbly, leading to a less desirable texture.

However, if the cake mix is within a few months of its expiration date and stored properly in a cool, dry place, you might still be able to use it.

Here's a suggestion:

* Test the leavening agents: To check if the baking powder or soda is still active, add a teaspoon to a cup of hot water. If it fizzes, it's still good. If not, it's time to buy a new mix.

* Adjust your recipe: If you're using an expired mix, consider adding a bit more leavening agent, adjusting the liquids, and maybe using a bit more flavoring.

Ultimately, using expired cake mix is a matter of personal preference and risk tolerance. If you're not sure, it's always better to play it safe and buy a fresh mix.