Vegan

If there’s one variety of tomato I can recommend, it’s Cherokee purple. I swear to god I didn’t know before stumbling across it that tomatoes could be so good you could just pluck it off the vine and eat it like an apple. You will not regret it

Tomatoes are my #1 pick. They're just so much better than store bought. Most other produce doesn't have nearly the same quality gap.

Otherwise it's mianly for convenience and sustainability. I'll be doing mostly lettuce and herbs this year I think. Lots of basil, and dill then some thyme and rosemary as well.

Dill and chives is easy.

Cherry tomatoes and chilli peppers as well.

I am currently trying to growing ginger, but that needs a somewhat warmer climate.

The chinese cabbage that I planted in the autuum is also still growing well in the small greenhouse I build.

Generally speaking you want to have a small greenhouse in a temperate climate so that you can start planting a bit earlier.

I only have a balcony, but you can already grow some things with a small raised bed.

As others said, tomatoes work great (if there's enough sunlight), especially on balconies, as tomatoes don't handle rain too well often.

I had some good results with green beans (special cultivars for pots), salads, herbs (like basil, oregano, thyme, rosemary) and cabbages, but there are cabbage butterflies that really love to eat them (and a lot of it). But I sill had some success, especially when planting pak-choi in fall and harvesting it in early winter.

Tomatoes are always a winner. Growing lettuce is also easy and fun, and you don't need to harvest the whole thing at once