Since he was talking about orzo as an ingredient, I made the same assumption as to the risotto being (usually) arborio rice. Orzo IME does not make a good risotto (the dish). It tends to overcook way too easy and take on a cheesy gruel personality. Waste of good cheese. OTOH, pot barley makes an awesome risotto that I actually prefer better than traditional rice-base risotto and easier to make as well.