I would like to know what are the easiest and fastest vegetables & fruits that can be grown in a small space with limited sunlight access, like an apartment balcony. I live in the small island of Singapore. It's sunny most of the year with no seasons.
Other than herbs, tomatoes and peppers are probably the easiest to manage in an apartment setting. Strawberries as well, but you won't get great production from strawberries in pots. It's best if you can set these out on an well sunny outdoor patio if you can to improve lighting as well as fruit set from bees.
Cut and come again stuff like salad leaves, annual herbs grown in succession e.g coriander parsley. Chives, mint, there's a wide variety of types and 'flavours' e.g. Apple mint. What is expensive in you location and seen if you could grow that easily?