The easiest win? Use your freezer strategically before things spoil. Most home cooks treat it like a black hole, but it's actually your best friend for extending the life of ingredients. Here's the mindset shift: the moment you see something approaching its peak — herbs getting soft, half a can of tomato paste, leftover wine, that bit of cheese — freeze it now rather than hope you'll use it. Chopped herbs freeze beautifully in oil in ice cube trays (perfect for winter cooking). Tomato paste freezes in tablespoon portions. Even things you think won't freeze, like citrus zest or stale bread, actually do. The second easiest move is meal planning around what you already have before you buy more. A quick look in your fridge before the grocery store saves you from duplicating lettuce you'll never finish or picking up chicken when you've got ground beef waiting. What draws more waste in your kitchen — things expiring before you cook them, or leftovers you make but don't eat?
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