Pyrex Glass Measuring Cups They are the little black dresses of the kitchen. I’ve collected Pyrex measuring cups in different sizes over the years, so I always have the right one for the occasion: the small one-cupper for melting butter in the microwave; the standard four-cup size for whisking salad dressings; and the huge, eight-cup version (known in my house as Big Bertha) for mixing and pouring pancake batter. They’re made of heatproof glass and have a simple design, which hasn’t changed much since my grandmother’s day. They’re also almost impossible to break. In a kitchen full of faddy tools, this one lasts forever and never goes out of style. –Linda M. Yardley, Wilmette, Illinois