If you buy flour in December for special baking, you will probably have some left over in February.
The good news is that, if you've stored it in an air-tight container, it's probably still good for Valentine's Day cakes.
A good rule of thumb is to throw away wheat flour in four to six months, according to Eat By Date. Self-rising flour, which has baking powder in it, has a shorter shelf life.
Corn flour can last up to a year.
Buying the right amount helps prevent waste. One five pound bag of flour equals 17.5 cups.
