About peanuts[]
The peanut or groundnut (Arachis hypogaea) is a species in the pea family Fabaceae native to South America. It is an annual herbaceous plant growing to 30 to 50 cm (one to one and a half feet) tall.The leaves are alternate, pinnate with four leaflets (two opposite pairs; no terminal leaflet), each leaflet 1 to 7 cm (1/3 to 2.75 inches) long and 1 to 3 cm (1/3 to 1 inch) broad. The flowers are a typical peaflower in shape, 2 to 4 cm (3/4 to one and a half inches) across, yellow with reddish veining. After pollination, the fruit develops into a legume 3 to 7 cm (1 to 2 inches) long containing 2 to 3 (rarely 1 or 4) seeds, which forces its way underground to mature.
Although a nut in the culinary sense, in the botanical sense the fruit of the peanut is a woody, indehiscent legume or pod and not technically a nut.
Peanut butter[]
Peanut butter is simply ground peanuts. Depending on how smooth the resulting paste is, it is known as either chunky or smooth peanut butter. Peanut butter usually contains salt so checking the contents is a good idea to make sure you don't eat too much salt. You can get salt free peanut butter from some shops or online. [1]