Maybe you already use of these common sense ways of eliminating food waste and stretching your grocery resources:
*Bake a large casserole, then freeze half of it to use another time.
*Prepare stovetop items like from-scratch chili and soup, then freeze half for later.
*Bring home half of your restaurant dinner to use the next day for lunch.
*Reserve half of a baked chicken to use the next day for soup.
*Use half as much meat at a meal, replacing it with other protein sources like beans.
*Use half your typical amount of bread for a sandwich.
*Use half as much sugar as called for in sweet recipes, replacing some of it with applesauce.
*Replace as much as half the butter called for in a recipe with Greek yogurt.
*Reduce juices by half with water before drinking.