Today the office in which I work provided pizza lunch for us, and the person ordering was extra thoughtful and ordered some additional special pizza for the few vegans who work in this office.
Upon inspecting the vegan pizza, it was visibly different from the other pizzas, but did not resemble other vegan pizzas that I've seen. There was still some kind of cheese on it, but a lot less than the regular cheese pizza. And similarly when I tasted it, it did not resemble any vegan pizza that I've had.
Is there some method or some test I can use to determine whether the pizza was put together with vegan ingredients or traditional cheese from cows milk? Is there a gadget or chemical process?
I don't have a milk allergy, nor am I lactose intolerant (as far as I know), so I can't rely on my physical reaction to the food to determine its origin.