While staying at my grandparents’ house last weekend, I was craving pancakes—until I opened the baking cupboard and found a jar of baking soda with a label from the early 2000s. Could it still work?

Add Yahoo as a preferred source to see more of our stories on Google. Sunken chocolate cake - Irina Meliukh/Shutterstock When it comes to baking, the ingredients in your cake batter do much more than ...