OrangeOctopusHair 7 points 8m ago
The aeration time differs between the Mastrena 1 and the Mastrena 2, the Mastrena 2 being the more agressive steamer of the pair. On a M1 a latte is closer to the 2-3 seconds while a M2 is closer to 1-2 seconds.
I like to place my steam wand against the divit/pour spout of the steaming pitcher, tilting my hand so the left side of the pitcher is lower then the right. This helps me control my aeration a lot better (less angry milk spitting, more lovely paper tearing)!
After aerating my milk, I set the steamwand closer to the left side of my pitcher, push my pitcher towards the machine fully, and press the wand all the way back (towards the machine), this helps get that deep whirlpool effect that reduces the large, non-microfoam bubbles.
Groom that milk like you have a firm grudge against it.
It also comes with time and practice, learning the depth and angle that works best for you