I never measure anything when making oil/butter with trimmings... I make mine with about 75% oil and 25% butter for better taste... I put a sh*t load of trimmings... Fill the pot with just enough oil/butter to soak the trimmings (trimmings will shrink when cooking, be careful not to add too much oil/butter... Start with a small amount, add more as necessary)... Simmer for 1 hour stirring frequently... Squeeze trimmings with spatula as often as you can... Drain, strain, and freeze... Not trying to toot my own horn... But my oil/butter is the beez-kneez! ^_^