The first step to avoid wasting food is to make sure you use everything you buy before it spoils. Try this tip: Institute the F.I.F.O. rule, or the first in, first out rule.
When you get home from the grocery store, unless you plan to use something you purchased that same day, move all the new things you’ve bought to the back of the fridge, and move everything else up to the front. That way they will be at hand when you’re planning your next meal or just reaching for a snack.
Read more ideas on how to prevent food waste.