It took me (us as we are a family now) to get a good system to manage food. With a few exceptions, like going on vacation, I never throw away meat or fish, it'

It took me (us as we are a family now) to get a good system to manage food. With a few exceptions, like going on vacation, I never throw away meat or fish, it's not that hard to manage, if I don't eat it within 1-3 days, I either freeze it, salt it or boil it. What you can do with what product requires a bit of experience, for example chicken must be boiled, pork and fish can be salted... It's much harder with vegetables, because they are not all equal, you might keep an egg plant for a month and another one for a week. I highly recommend fridges with a vegetable compartment that monitor humidity and keep temperature just above 0°C, you can keep a salad in good condition for weeks in it. For milk derived product, I think the date on the product is a big culprit here. You can eat yogurt weeks after the "best by" date. Same for cheese. The good thing is that it's easy to tell if a yogurt or cheese has turned bad. For cheese we don't eat quickly, I use a vacuum pump with a hard container. There are also some little tricks like putting old yogurt in front at the height of the kids.