When you buy hamburger in bulk, boil it. Rinse it and then put it into individual bags and freeze it. The boiling (and then rinsing) seems like it washes more of the fat away, but it also doesn’t clump as much when it’s cooking.
1. Put the hamburger in a pot. Just cover with water.
3. Measure into bags, either ½ pound or 1 pound each.
(One pound, after cooking, is 1⅔ cups. For a half-pound bag, just put in ½ cup and then ⅓ cup.)