Who doesn't like a mango lassi, right? But when you don't have good fresh mangos or can't find mango puree, why not try a banana lassi? I ordered 2 in a restaurant in Udaipur because they were so good and it was because they had no mangos at the time -- what a find!
Recipe Summary test
The servings are small in comparison to restaurants outside of India, but I think it's probably a good idea to consume smaller amounts of good active bacteria in yogurt.
Substitute honey for sugar, if desired.
Use good strong-flavored yogurt: it makes all the difference. Milk is just to get things moving, so you can adjust to preferred taste/texture.