The Onion is a Vegetable Food item in Don't starve together. Onion can also be Farmed by planting Seeds for a 2.6% chance of growing them or by using Onion Seeds.
When eaten raw, Onion restores 9.5 Hunger at the cost of 10 Sanity. They take 15 days to spoil. It can be used as an ingredient in several Crock Pot recipes and is require for Salsa Fresca, Bone Bouillon, Grim Galette and Moqueca. Feeding an Onion to a bird in a Birdcage will produce 1–2 Onion Seeds, as well as a 50% chance to get a plain seed.
Onions are featured in The Gorgeevent in Don't Starve Together. They grow from Pointy Seeds, which can be bought from Sammy for one Old Coin. An Onion can be made into a Roast Onion by being cooked at the Campfire next to the Swamp Pig Elder. Onions can be used in a variety of Cooking Recipes exclusive to The Gorge.