I got a chest freezer for $200. I freeze everything before or on its expiration date.
Sometimes if its mushy veggies I make a stock and freeze it for the next meal. If its too far gone i have a compost jar in the kitchen and a bin outside.
I started a garden and an edible native hedge this year. I have tea herbs and squash for free now and working on a seed propagation.
I started a coop mushroom grow with my neighbors since he felled some hardwood and I had the plan. The leftover mushrooms we dont eat will be either sold at market or made into liquid cultures.
Were talking about going in on a local half cow or pig. He says if my garden keeps growing we can buy the plot behind us together and start a farm. Would cut grocery costs a lot.
My wife and I have pantry weeks where we dont go grocery shopping, we eat whats in reserve, soak dry beans, thaw last weeks on sale chicken breast and pressure Cook em, make a flatbread and have some curry.
Instant pot helps too. Thinking about getting coturnix quail to feed good scraps to and get eggs out of. I can plant cover crops for em on the last strip of lawn I have.
It doesn't have to be wasteful forever.