Alliums·Foundational·Year-round

Red onion

Allium cepa

Mildly sweet, less pungent than yellow; the purple color signals anthocyanin compounds.

Category
Alliums
Peak form
Raw in salads; pickled (the modern American foodie staple);
Common uses
5
Cross-refs
6

About Red

The red onion is the purple-skinned, magenta-fleshed onion that anchors raw onion applications across global cuisines — Italian salads, Mediterranean wraps, Mexican fresh salsas, Indian curries (raw garnish), and ubiquitously in modern American salad culture. The deep red-purple color holds when pickled briefly (vinegar + sugar + salt) — pickled red onion has become a defining condiment of contemporary American food. Red onions are milder and less pungent raw than yellow onions, making them the right choice for any application where the onion is consumed without cooking. The papery skin's color leaches into surrounding ingredients in pickling — a feature for visual presentation, sometimes a defect for white ingredients.

Variety profile

Botanical
Allium cepa
Flavor
Mildly sweet, less pungent than yellow; the purple color signals anthocyanin compounds.
Texture
Crisp raw; holds shape when pickled; less effective for caramelization than yellow.
Peak form
Raw in salads; pickled (the modern American foodie staple); sliced thin on burgers and sandwiches.
Season window
Year-round storage from fall harvests; peak quality fall through spring.

Common uses

Editorial notes

Worth knowing

Soaking sliced red onion in cold water for 10 minutes removes the harsh edge while keeping crispness. Pickled red onion lasts 3+ weeks refrigerated.

Cross-references

Related categories

Related seasonality