Can you use cake mixes with experation dates one year old?

It's generally not recommended to use cake mixes that are a year past their expiration date. Here's why:

* Loss of Freshness: Cake mixes contain ingredients like leavening agents (baking powder or soda) that lose their potency over time. This can result in a cake that doesn't rise properly.

* Changes in Texture: The fats and oils in cake mixes can become rancid, affecting the texture and taste of the final cake.

* Flavor Degradation: The flavor of the cake mix ingredients can diminish as they age.

However, you can try to salvage an older cake mix by doing the following:

1. Check the Appearance: If the mix looks discolored or has a strong odor, it's best to discard it.

2. Test the Leavening Agent: Add a teaspoon of the mix to a cup of hot water. If it fizzes vigorously, the leavening agent is still active.

3. Adjust Ingredients: You might need to adjust the amount of leavening agent, milk, or oil to compensate for the loss of freshness.

Ultimately, using an expired cake mix is a gamble. If you're unsure, it's best to err on the side of caution and purchase a fresh mix.