onions and or escallion

ProduceBulbing onions are generally harvested in late summer and early fall, with good storage allowing year-round availability. Scallions and green onions are available year-round in most markets, with peak season in spring and early summer when they are most tender and abundant.

Onions are rich in quercetin and other antioxidant compounds, with moderate vitamin C content and dietary fiber, especially when the papery skin is included in stock-making. Scallions provide vitamin K, folate, and allicin (the sulfur compound responsible for the pungent aroma).

About

Onions (Allium cepa) are bulbous vegetables of the amaryllis family, originating in Central Asia and cultivated globally for thousands of years. The edible bulb consists of concentric layers of modified leaves containing sugars, sulfur compounds, and volatile oils that develop characteristic pungency and sweetness depending on variety and growing conditions. Common varieties include yellow onions (most pungent, suited for cooking), white onions (milder, sharper flavor), red onions (sweeter with purple pigmentation), and pearl onions (small, pickling varieties). Shallots (Allium cepa var. aggregatum) are smaller, elongated bulbs with copper-colored papery skin and purplish-tinged flesh, offering a more delicate, complex flavor combining sweetness with subtle garlic notes.

Scallions (also called green onions or spring onions, Allium fistulosum) are the immature or harvested green shoots of certain onion varieties, featuring a white to light green bulbous base and elongated green stalks. Unlike bulbing onions, they do not develop large underground bulbs. Both the white and green portions are edible and used in cooking, with the white base providing onion pungency and the tender green tops offering mild onion flavor with herbaceous notes.

Culinary Uses

Onions serve as a foundational aromatic across virtually all savory cuisines, used to build flavor bases in soups, stews, sauces, and sautéed vegetable dishes. Yellow onions are the workhorses of the kitchen, mellowing and sweetening considerably when cooked slowly. Red onions, prized for their sweetness and color, are favored raw in salads, salsas, and as pickled garnishes. Scallions function as both aromatic and garnish, with white portions added to stir-fries and cooked dishes and green tops scattered as finishing elements over Asian noodle dishes, baked potatoes, and soups. In French cuisine, the mirepoix (onion, celery, carrot base) forms the backbone of stocks and braised dishes. Scallions are essential in Asian cuisines—Korean pancakes (pajeon), Chinese stir-fries, and Japanese preparations—adding fresh allium character and visual appeal.

Forms & Preparations

  • Whole bulbs — Unpeeled onions used for roasting, steaming, or as the starting point for peeling and slicing; may be quartered for stocks.
  • Sliced — Thin or thick slices used for caramelizing, sautéing, layering in gratins, or adding to soups and stews; allows for even cooking and flavor development.
  • Diced or minced — Small, uniform pieces for flavor distribution in sauces, mirepoix, and compound fillings; preferred for even cooking in shorter timeframes.
  • Julienned — Thin matchstick cuts used for stir-fries, sautés, and dishes where texture and quick cooking are desired; exposes more surface area for caramelization.
  • Whole scallions or chopped greens — Scallions used whole in grilling or stir-frying, or separated and chopped (white and green portions used separately); green tops used as fresh garnish.
  • Caramelized or pickled — Onions slowly cooked until deeply golden-brown and sweet (caramelized) or preserved in vinegar with spices (pickled) for condiment use and sandwich toppings.

Substitutes

  • Unknown — Use in smaller quantities (1 clove per small onion equivalent); imparts stronger, more pungent flavor; better for flavoring than as a bulk aromatic base.
  • Unknown — Milder, sweeter flavor with less pungency; use in equal or slightly larger quantities; works best in soups, braised dishes, and where a gentler allium note is desired.
  • Unknown — More delicate, slightly sweet flavor with subtle garlic notes; use in equal quantities; excellent for raw applications and refined sauces where onion character should be subtle.
  • Unknown — Mild onion flavor with herbaceous notes; use fresh as garnish or in larger quantities (2-3x volume) for scallion replacement; delicate, used raw or as finishing element.
  • Unknown — For umami depth in broths and sauces where onion sweetness and savory character are desired; use 1 tablespoon per small onion; adds saltiness, adjust seasoning accordingly.