Long story short: at the new shop that I'm working with, there are two different espresso machines from two different manufacturers. One, when you steam milk, the milk is fizzy. Not so on the other. Anyone have any idea why this would be happening? Could the steam boiler water level be too high or too low?
I haven't done any experimentation (or adjustments) yet, but I'm stumped so far. I've never seen this before. In my experience, fizzy milk comes from bad milk... but that's not the case with this. Any thoughts, folks?