I have some fair-sized terra cotta pots; what could I grow in them?

Herbs can always add to what you cook. I just bought some chives and rosemary. I will be looking to add basil, oregano and thyme.

Salad fixings.There is a restaurant near me that grows “salad bowls”.They put lettuce, radishes,etc all in one pot.Whatever they can fit.
Then they force you to go out back and make your own meal.Getting a steak is an ordeal.That place really sucks. ;)

You can pretty much grow anything you want, depending on how much time you want to spend fussing with the plants and what type of yields are acceptable. I’ve grown potatoes, cucumbers, tomato, peas, carrots, etc in containers. Watering is the main trick.

Tomato plants. Though they do smell a bit funny. I love tomatoes though

I grew peppers and tomatoes in mine the past couple of years. Radishes didn’t work so well, I found I could get better more production with a tall plant rather than being limited to just the surface soil.

Tomatoes are a standard of container gardening for a reason. Plant the tomatoes with some basil and garlic in the same pot, since they’re useful companions. Tomatoes often need to be replanted because of tomato blight developing in the soil, but the garlic often prevents that.

Last year I grew zucchini in them and they did great!! So I doing with all the above veggies that have been previously mentioned, along with even peas as long as you have something they can climb on. I grow all sorts of veggies in containers and create a whole garden of them since I only have a balcony to work with in terms of outdoor space.

Garlic ^^

I second @incendiary_dan ‘s suggestion.

Kumquats
Meyers lemons
Strawberries
Heirloom tomatoes
Radishes
Dill fern
Thai basil
Mint
Those super yummy little peppers that come packaged in red, yellow and orange.

Herbs: basil, cilantro, chives, oregano.

Salsa: chili peppers and tomatoes

Roots: turnips, radishes and rutabagas

Nasturtium flowers which are beautiful and edible (as long as they never have any kind of pesticide sprayed on them)

Sweet peas

A variety of veggies/herbs but Ive heard to line your terracotta pots with plastic liners so the dirt dosent dry out so quickly as terracotta is porous.