I decided to make Martha Stewart's cranberry steamed pudding for Christmas dinner, but it called for a 7½-cup mold and I only had a 5½-cup mold and a 3½-cup mold, so I decided I'd split the cranberry topping and the batter between the two, making a large and a small pudding. Imagine my aggravation, after buttering two molds, putting in the cranberry topping and pouring the batter, when it appeared that everything would have fit in the 5½-cup mold and still left the requisite ½-inch headspace. Believe me, I had a few choice words for Martha at that point, since it was too late to salvage what I'd already poured into the smaller mold! I think there would have been a 3+-inch headspace if I'd actualy had a 7½-cup mold to use.
Which raises the question: how do you calculate the volume of a pudding mold? I just poured water into mine and measured it. My molds held 6 and 4 cups, respectively, so I subtracted a half-cup, figuring that was enough to allow for headspace in the molds. Either Martha's crazy or that method isn't correct, so how *do* you calculate the volume of a pudding mold? Thanks in advance!