I have an automatic milk frother similar to this one.
The issue I'm having is that the milk froth that is produces is completely inconsistent.
I'm looking for microfoam consistency that you normally get with a flat white, like this.
But often I get really large bubbles that you get with a cappuccino, like this.
There doesn't seem to be any pattern between getting the microfoam vs. large bubbles:
- The milk fat content (and usually brand) is consistent.
- The milk temperature is the same (out of the same fridge).
- The milk quantity that I put in the frother is the same (I pour it up to a specific line each time).
- The frothing duration is the same (as far as I know) - it's all automated, but I don't stop it prematurely.
Any idea why I'm getting such unreliable results? I'd like to know how to get the microfoam each time I make a coffee, but it seems to be luck of the draw each time.