# 95. PEANUT.
The peanut, or groundnut (Arachis hypogaea), is a species in the "bean" family. The cultivated peanut was probably first domesticated in the valleys of Peru.
It is an annual herbaceous plant growing 30 to 50 cm tall. The Flowers are a typical pea flower in shape, 2 to 4 cm across, yellow with reddish veining.
Hypogaea means "under the earth". After the pollination, the flower stalk elongates causing it to bend until the ovary touches the ground. Continued stalk growth then pushes the ovary underground.
The mature fruit develops into a legume pod or the peanut. Pods are 3 to 7 cm long and contain 1 to 4 seeds. Peanuts are known by many other local names such as earth nuts, ground nuts, goober peas, monkey nuts, pygmy nuts and pig nuts.
Varied applications:-
Peanuts have many uses. They can be eaten as straight food, used in recipes, made into solvents and oils, used in make-up, medicines, textile materials, peanut butter, as well as many other uses.
Popular confections made from peanuts include peanut butter, candy bars, cookies, plain roasted peanuts and salted peanuts.
Peanuts, served by themselves, are one of the most popular nuts in the world. They are often eaten as snacks, served at cocktail parties and are sometimes added as a nutritional side dish with lunch.
Salted peanuts are usually roasted in oil and packed in retail-size plastic bags or hermetically sealed cans. Dry roasted, salted peanuts are also marketed in significant quantities.
Peanuts are often a major ingredient in mixed nuts because of their inexpensiveness compared to Brazil nuts, cashews, walnuts, and so on.
Peanut butter has been a tradition on camping trips and the like because of its high protein count and the fact that it resists spoiling for long periods of time. Peanut butter is used in the homes and in the commercial manufacture of sandwiches, candy, and bakery products.
Boiled peanuts are a preparation of raw, unshelled green peanuts boiled in brine and eaten as a snack in the United States.
More recently, fried peanut recipes have emerged - allowing both shell and nut to be eaten. Peanuts are also used in a wide variety of other areas, such as cosmetics, nitroglycerin, plastics, dyes and paints.
Peanut oil is often used in cooking, because it has a mild flavor and a relatively high smoke point. Due to its high mono unsaturated content, it is considered more healthy than saturated oils, and is resistant to rancidity.
There are several types of peanut oil including aromatic roasted peanut oil, refined peanut oil, extra virgin or cold pressed peanut oil and peanut extract. In the United States, refined peanut oil is exempt from allergen labeling laws.
Peanut flour is lower in fat than peanut butter, and is popular with chefs. Its high protein content makes it suitable as a flavor enhancer and peanut flour is used as a gluten-free solution.