This is a special way of growing onions that is practised in the Valls district of Catalonia, Spain — two hours to the south-west of Barcelona. Fully grown white onion bulbs are planted in the fall, let grow for a few months, then gathered and stored. They are then replanted the next fall.
Calçots are a type of onion, bigger than a green onion but smaller than a leek, which are in season at the end of winter. They're put on the barbeque until charred, wrapped in newspaper to steam and cool, then you slip the charred outer layer off with your hands and dip them in a special sauce.
Onions consist mostly of water, carbs, and fiber. Their main fibers, fructans, can feed the friendly bacteria in your gut, though they may cause digestive problems in some people.
Is leek in the onion family?
Calçots are a variety of green onion that have a sweeter and milder taste than your average white or yellow onion. The flavor is comparable to leeks or spring onions. Once these onions are ready for picking in the spring, Catalans love to bring friends and families together to have a calçotada.
Whole onions and shallots are best stored in a cool, dry, dark and well-ventilated room. Ideal places include the pantry, cellar, basement or garage. Peeled onions can be stored in the fridge for 10–14 days, while sliced or cut onions can be refrigerated for 7–10 days.
They contain more moisture than mature onions, so keeping them out at room temperature for longer than a couple of days could cause them to mold. Keep them in the crisper drawer, sealed well in a plastic bag, and they'll stay fresh for about two weeks.
Vacuum sealing fresh onions, garlic and/or mushrooms can lead to the growth of a species of bacteria that can cause botulism. You can store cooked mushrooms, onions and garlic in Vacuvita bags or containers.
When you pick or buy your spring onions simply keep them in a glass or vase of water on your kitchen countertop. There's no need to refrigerate – just keep the water topped up.
If you're worried about spring onions going off before you get the chance to use the whole bunch, just chop them up (stalks and all), seal in a zip-loc bag and put them in the freezer. You can then chuck a handful in a pan when needed and cook from frozen at any time!
Growing spring onions in waterChoose spring onions that have a few roots at the base of the plant. Trim the tops of the leaves. Place the spring onions in a clear glass jar and fill it with water so that the white bulb ends of the plants are underwater. Change the water every 2-3 days to keep it fresh.
Spring onions are a great cut and come again vegetable. When you place the roots in water, they will grow and you can just keep reusing the green parts.
Spring onions: also called scallions, can be eaten cooked or raw, and have a milder flavour than regular onions. They can keep for up to 3 days on the shelf, or two weeks in the fridge.
