Learn about healthy portion control. A rule of thumb for adults is usually three ounces (90g) of protein, one cup (175g) of vegetables, and half a cup (87.5g) of starch. Bring serving dishes to the table to allow all family members to learn how to serve themselves proportionately. Successful portion control means that you don't have to miss out on your favorite desserts or fried food dishes, you just need to learn how much of it you can eat without it being bad for you.