Does it matter what milk I use? This is a highly contentious topic. In Italy, don't even bother asking for a soy cappuccino, it's full fat dairy milk or have it black! However, here in Australia we are a little more amenable - now you can get soy milk, skim milk, oat milk, almond milk, macadamia milk, hemp, rice, walnut, hazelnut, to name a few.