Pinch (unit)

A pinch is a small, indefinite amount of a substance, typically a powder like salt, sugar, spice, or snuff. It is the "amount that can be taken between the thumb and forefinger".
Some manufacturers of measuring spoons and some U.S. cookbooks give more precise equivalents, typically US customary teaspoon; some sources define it as or teaspoon. There is no generally accepted standard.
In the United Kingdom, a pinch is traditionally UK salt spoon, the equivalence of UK teaspoon. UK salt spoon is an amount of space that can accommodate 15 British imperial minims of liquid.