Onionlike vegetables

LEEKS

These mild, green alliums are often used in soups and stews for a subtle flavor.

The clue "Onionlike vegetables" points to leeks because they belong to the same family as onions and have a similar flavor and appearance. Leeks are long, green vegetables often used in cooking, much like onions, making them a fitting answer. The clue is straightforward, relying on the shared characteristics of these vegetables rather than wordplay.