DarlingMollie 3 points 1y ago
For shaken espressos, its because they have less milk/filler. Full pumps of classic would taste fine in a regular latte but would be too much in a cup with just espresso and a splash of milk (iced shaken espresso).
They make the pumps shorter for some of them because they want to keep the recipe the same (same amount of pumps per size) for certain more concentrated (LCS for Matcha, Brown Sugar for BSSE, and classic for ISE), so you're absolutely right!
If someone wants to substitute a half pump drink for a full pump drink, give them the full pumps unless its a shaken espresso. :)