The size of one serving
The American Cancer Society says:
1 ounce meat is the size of a matchbox (eat 3 to 4 ounces)
3 ounces fish: size of a checkbook
2 tablespoons peanut butter: the size of a ping-pong ball
1 ounce cheese: the size of four dice
1/2 cup pasta: size of a tennis ball
1 apple or orange: size of a tennis ball
1 cup vegetables or fruit: size of a baseball
1 medium potato: size of a computer mouse
1/4 cup dried fruit: a small handful.
