How do you measure 0.3 ounces of gelatin out of a 3 ounce box?

Well, honey, if you want 0.3 ounces of Gelatin from a 3 ounce box, you'll need to use a scale. Simply weigh out 0.3 ounces of that wiggly stuff and try not to make a mess. Just make sure you don't accidentally add too much and end up with a jiggly disaster on your hands.