Compost. Put nutrients from food back into the soil, not into a methane-emitting landfill site.
This one is a bit tricky. My local council have been promising for a couple of years that I will soon be able to put food in my brown bin with my garden waste, but so far there has been no progress.
I don't have room for a compost bin, nor would I have use for the compost.
So, here is the plan: I reuse as much food as I can by putting whatever I can out for the birds. I will also contact my local council and ask them to get a move on with the food going in the brown bins thing.