Sell by/Best by/Use by dates are not legislated, have no oversight, and are not standardized (except on baby formula). Hence, these dates do not mean that food is yucky or unsafe after the date. Learn to use your eyes, nose, and mouth to determine if food is safe and tasty and stop throwing food out just because of the date.
Conduct a food waste audit in your home. Measure and record, either by weight or by quantity, every bit of food waste you discard over the six weeks. Consider using the information you glean to adjust your buying or eating habits.
Whether it’s leftovers you just can’t bring yourself to have one more serving of right now, or food you just aren’t going to get to eat before it goes bad, freeze it! Not everything will return to its original glory, but frozen bread makes great toast, frozen fruit is perfect in smoothies, frozen veggies are delicious when tossed into pasta dishes and soups.
If you regularly have a surplus of larger quantities of food from large events or through your workplace or synagogue, find a local food bank or other food rescue partner that can share the leftovers with people in need. Or, simply offer up your goodies to friends and neighbors.
Compost the food waste that you do create. Options vary depending on what services are available in your area, but there’s almost always a way to do it. Research what’s possible for you and implement it.