Basil

Basil — Basil (Ocimum basilicum) of the Family Lamiaceae, is also known as Sweet Basil or Tulsi. It is a tender low-growing herb that is grown as a perennial in warm, tropical climates. Basil is originally native to India and other tropical regions of Asia, having been cultivated there for more than 5,000 years. It is prominently featured in varied cuisines throughout the world including Italian, Thai, Vietnamese and Laotian. It grows to between 30–60 cm tall, with opposite, light green, silky leaves 3–5 cm long and 1–3 cm broad. The flowers are quite big, white in color and arranged in a terminal spike. Unusual among Lamiaceae, the four stamens and the pistil are not pushed under the upper lip of the corolla, but lay over the inferior. After entomophilous pollination, the corolla falls off and four round achenes develop inside the bilabiate calyx. The plant tastes somewhat like anise, with a strong, pungent, sweet smell. Basil is very sensitive to cold, with best growth in hot, dry conditions. While most common varieties are treated as annuals, some are perennial, including African Blue and Holy Thai basil.

Basil is most commonly recommended to be used fresh; in cooked recipes it is generally added at the last moment, as cooking quickly destroys the flavour. The fresh herb can be kept for a short time in plastic bags in the refrigerator, or for a longer period in the freezer, after being blanched quickly in boiling water. The dried herb also loses most of its flavour, and what little flavour remains tastes very different, with a weak coumarin flavour, like hay.

When soaked in water the seeds of several basil varieties become gelatinous, and are used in Asian drinks and desserts such as falooda or sherbet. They are used for their medicinal properties in Ayurveda, the traditional medicinal system of India.

The various basils have such different scents because the herb has a number of different essential oils which come together in different proportions for various breeds. The strong clove scent of sweet basil comes from eugenol, the same chemical as actual cloves. The citrus scent of lemon basil and lime basil is because they have a higher portion of citral which causes this effect in several plants, including lemon mint, and limonene, which gives actual lemon peel its scent. African blue basil has a strong camphor smell because it has camphor and camphene in higher proportions. Licorice Basil contains anethole, the same chemical that makes anise smell like licorice, and in fact is sometimes called Anise Basil.