That makes sense. Is the whey in dried form? I still can't understand what is providing the structure for the bread as whey is a liquid. I've made bread using whey in place of water before but not in place of flour.
Noooo, this is powder form! See pic below. People (like my kids) use it in powder form for drinks. And it comes in all sorts of flavors, like ice cream, e.g. strawberry chocolate, blueberry, etc. Just in vanilla there were about 5 different flavors- French vanilla, natural vanilla, vanilla, ice cream vanilla, vanilla bean, etc.