Teaspoon is a common spoon for eating in western countries. Its most common use is to stir milk tea or coffee, hence its name.
Teaspoon is also a unit of capacity measurement in cooking. Different countries have different standards for teaspoons, but they are generally about 5 ml. American federal law stipulates that 1 American teaspoon is equal to 5 ml, and Australia, Canada, New Zealand and Britain also use this standard.
Traditionally, 1 American teaspoon, such as 0. 1667 American liquid ounce (4.93 ml); The traditional 1 inch teaspoon is equal to 0. 125 inch liquid ounce (3.55 ml). Although 1 spoon is equivalent to 3 teaspoons in most places, it takes 4 teaspoons to be equivalent to 1 spoon in Australia.
A teaspoon = 5 cents.
1/2 teaspoons = 2.5 cubic centimeters
1/4 teaspoon = 1.25 cubic centimeter.