by Guest » Mon Sep 26, 2005 3:14 am
Look at the nutrition panel. In "serving size" it should equate a US Customary size to weight in grams.
My Bisquick package says 1/3 cup = 40 g, so 1 cup = 120 g.
Caster sugar is "superfine sugar" in the US, but I don't have any, so I can't look. For regular granulated sugar, 50 g is about 1/4 cup, but that may not be right for superfine.