Onions are a bulb formed from the bases of their leaves. Inside their bulb their leaves are tightly pushed against each other and are protected by their tough outer leaves. Long, green, hollow leaves extend from their bulb and, later, if not harvested can produce a single flowering stalk.
Onions come in various shapes and colours, the most common being round to oval-shaped and slightly smaller than a tennis ball. Inside, onions have thickish, moist, leaf bases which form concentric rings from the centre outwards. Also available are torpedo-shaped onions, globe-shaped onions with really flattened tops and bottoms, and small egg-shaped onions which are often sold as pickling onions. In addition, white, brown, red or yellow onions are also available.
Onions contain a compound called sulfur which detoxifies the body making a great wound healer and detoxifies the skin. Onions are an excellent source of quercetin, a potent antioxidant, and they contain anti-allergy, antiviral and antihistamine properties. Onions aid in cellular repair. To obtain the maximum nutritional benefits, onions should be eaten raw or lightly steamed.
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