Sainsbury's
These are fresh, whole onions, a fundamental ingredient in countless cuisines. They are typically round with dry, papery skins that can range in color from white to yellow to red, depending on the variety. Inside, the flesh is crisp and pungent, offering a sharp flavor when raw that mellows and sweetens considerably when cooked. They are a staple for building flavor in savory dishes.
Onions are incredibly versatile and form the aromatic base for many cooking methods.
To prepare, trim off the root and stem ends. For most recipes, you will peel away the dry outer layers to reveal the firm flesh beneath. You can then slice, dice, or chop the onion according to your recipe's needs. Cooking onions slowly over medium heat allows their natural sugars to develop, resulting in a deep, sweet flavor. They can also be added earlier in the cooking process to infuse broths and stews with their characteristic savory notes.
While all onions offer pungency, different varieties have distinct flavor profiles. Yellow onions are generally the most common and versatile, suitable for most cooking. Red onions tend to be milder and are often preferred raw in salads and sandwiches. White onions are often sharper and are frequently used in Mexican cuisine.
Home cooks and professional chefs rely on onions for their essential flavor-building properties.
Store whole, unpeeled onions in a cool, dry, and well-ventilated place, away from direct sunlight. Avoid storing them in plastic bags, as this can trap moisture. They should not be stored near potatoes, as the gases they release can cause each other to spoil more quickly.