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One of the world’s oldest food sources, vegetables in the allium family include all varieties of onions, as well as garlic, leeks, and chives.
Believed to be a staple of the prehistoric diet, alliums likely originated in the region between central Asia and the Middle East; mysteriously, some varieties are native to North America, as well. Easy to grow, transport, preserve and store, alliums were not only a staple of ancient diets but also a symbol of longevity and the afterlife. Their antimicrobial, antifungal, stimulant and diuretic properties also made alliums useful in early medicine—they are mentioned in texts from Egypt, Greece, India and China as a curative for impotence, scorpion bites, heart disease, lack of energy, and the Black Plague. Spread throughout the Western world by both conquerors and traders, leeks were carried to North America by English settlers, and garlic followed during later waves of European immigration.
Alliums are rich sources of vitamins B6 and C, folate, manganese, potassium, phosphorus, calcium, and magnesium. They are also highly antimicrobial and antifungal, making them useful in traditional remedies for infectious disease and treating wounds, and are rich in organosulfur compounds beneficial for treating cardiovascular disease and cancer.
Wrap unwashed peppers in a slightly dampened paper towel, seal in a plastic bag and store in the refrigerator crisper for up to 5 days. Green peppers will last slightly longer than red or orange varieties.
All varieties of alliums come into their own when slowly cooked over low heat, which allows their sugars to caramelize and their fibers to break down. The lighter flavor of shallots and leeks pair well with poultry, pork, eggs, and dairy, while the heavier flavors of onions and garlic complement rich and hearty dishes. Small varieties such as Cipollini and Torpedo onions are delicious when roasted, glazed in balsamic or sherry vinegar, and sprinkled with herbs such as thyme or rosemary. Chopped chives are a bright and piquant garnish for soups, dips, potatoes, egg dishes, fish and other seafood.
Finely chop shallots and/or leeks and cook slowly in plenty of olive oil over medium heat, until they are fragrant, broken down, and deep golden-brown in color. Add salt, pepper, and a splash of sherry vinegar, and keep cooking over low heat until liquid has thickened. Toast several slices of crusty bread and spread with goat cheese or ricotta. Spoon shallot/leek mixture over the cheese spread, top with fresh, ripe tomato slices, and sprinkle with chopped chives and, if desired, a pinch of grated lemon zest.
If serving alliums raw, soak slices in hot water to mellow their pungency.