From the smallest measurement of a cup of flour to the largest, the difference is only slight: about ¾ ounce/22 grams or — if using our equivalent volume measurement — 2 ½ tablespoons.

A: You've touched on something I sometimes (read: often) gripe about: baking recipes without gram measures. Some people use a scoop-and-sweep method and then their cup of flour is 140 grams (or more).

It is the equivalent of 28.349 grams or 437.5 grains. A troy ounce is a little heavier, with a gram equivalent of 31.1. The difference (2.751) may be minute for a small quantity, but can be ...