protien drinks

i have a question with regard whey protien drinks. when i mix up i cup of skim milk with 1 scoop of powder and couple pience of fruit in the blender it double to 2 cups when i am finished. so here is my question dose that count as 1 cup or 2? julie

Hi Julie, I would say that it still counts as one cup, since that is the measurement before blending. Blending incorporates air, which causes the milk to froth. But the nutritional content is still the same as one cup. I prefer to blend my protein shakes with water and a dash of splenda, instead of milk, because I don't like it so frothy. Anybody else?