VEGETABLES

Basil

Ocimum basilicum

A fragrant Mediterranean herb central to Italian, Thai, and Vietnamese cuisines — with dozens of varieties from sweet Genovese to lemon to holy Thai basil, each with distinct flavor profiles.

Don’t refrigerate it

Most herbs go in the fridge. Basil shouldn’t. Cold temperatures cause basil leaves to develop dark blotches and bitter flavors within hours. The proper storage is stems in a glass of water on the counter, like cut flowers — basil will keep fresh for a week or more this way.

This temperature sensitivity reflects basil’s tropical Asian origins. The plant evolved without ever encountering refrigerator temperatures.

Italian vs Thai

Western and Asian basils are nearly different ingredients:

  • Italian (Genovese) basil — sweet, peppery, slightly minty; the basil of pesto and Caprese
  • Thai basil — anise/licorice notes, more peppery; essential in Thai green curry and pho
  • Holy basil (tulsi) — even more pungent, slightly clove-like; sacred in Hinduism

Substituting Italian basil for Thai in pho is jarring; using Thai in pesto produces a strange anise-flavored sauce.

A short summer

Basil dies at the first frost — and even before frost, leaf production slows dramatically as nights cool. The peak basil season in temperate climates is genuinely brief (8-10 weeks of high quality). This brevity is why summer pesto-making and basil preservation (freezing pesto, drying leaves) is a beloved tradition in Italian families.

Find more vegetables by letter

Basil starts with B and ends with L. Browse other vegetables along the same letter.

Vegetables that contain a letter from "Basil":