I had no idea.
Here are two instances where it might actually cause a problem:
1. Making a recipe that calls for a boxed cake mix
2. You need 24 cupcakes and can barely get 22 out of the mix!
I came across this little discovery while browsing Pinterest for a sewing pattern. (Yes, yes, my mind wanders from one thing to another while in Pinterest--just like yours does.) This lady had an ingenious idea to come up with a mixture to make up for the missing 3 ounces of cake mix. Go to her blog to get the recipe for the mixture. You'll thank me later.
Go here to Make A Jar of Cake "Up-Sizer"
|Click photo to get the recipe!|