We bought a snazzy digital kitchen scale the other day, because our old scale was dying. And then, completly by coincidence, I came upon The Kitchen Scale Manifesto at eGullet:
Posted on April 10, 2005 06:58 PM. Filed under: food.In modern home kitchens in Europe, a kitchen scale is standard equipment. In the US, one rarely sees them except in the kitchens of compulsive dieters and very serious amateur pastry chefs. Because most people in Europe have scales, recipes generally specify quantities of bulk dry ingredients as weights. For example, a cake recipe might require 250 grams of flour. In the US, the same recipe would most likely use cups, which measure volume, not weight.
So why the difference, and does it really matter? Is weighing ingredients just a complicated, confusing, and unnecessary consequence of going metric? The answer is that it does really matter, and once you get the hang of it it's actually easier than using cup measures.
It matters because the amount of an ingredient that fits in a cup varies a lot depending on how coarse the grain is and how tightly it is packed into the cup measure. Weights, on the other hand, tell you exactly how much of the ingredient you have, independent of how much air space exists between the particles. The amount of flour in a cup can vary as much as 25% depending on how it is packed. Sifting before or after measuring can make the difference even greater. Needless to say, this kind of disparity makes a tremendous difference in how a recipe comes out. One morning pancakes are light and fluffy, the next they are thin and rubbery.
Another advantage to weighing ingredients is that when you share your recipe with others, they can more easily reproduce results similar to your own. The number one complaint of home cooks is that they followed a recipe, but it didn't turn out. The number one reason this happens is that although they used the same number of cups of each ingredient as the recipe author, they actually used a very different amount. [continue]