The amount or size of food or beverage a person eats or drinks at one time.
Vegetable portions should be about the size of two handfuls.
Grain portions should be the size of a closed fist.
Meat portions are the size and thickness of your palm.
Fruit portions are the size of a closed fist.
Oil, butter, dressings, etc., should be about the size of your thumb.
*** Note - The size of the portion is based on the person doing the eating! Kids have smaller hands, so smaller portions