I'm horrible at this but my sister is amazing.
She'll make a giant pot of spaghetti, left over sauce? Make some chili. Left over veggies? makes a soup.
But when I last calculated our food expenses, we spend a lot going out or buying things we don't need and end up going into the trash. We used to buy a giant package of whatever and freeze it. But coming home from work we need to cook then because... hunger, so we end up just buying fresh beef. Few months later, the frozen meat is now freezer burnt and now we just end up throwing it away.
A thing we're doing now is labeling everything and not buying things in huge excess. We (my wife and I) don't need 10 pounds of ground beef, a pack of chicken breasts, and a whole chicken. While we might pay more /kg, we save hugely with less waste.
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