Moogachi UsaL is stir fried moong sprouts. We use lots of sprouts in Maharashtrian cuisine. When sprouts or beans are used, it is called "UsaL" and when it's made with vegetables, it's simply "bhaaji" (e.g. Bhendichi bhaaji/Okra stir fry)
Follow these directions to sprout moong beans. My mom always uses ginger while making moogachi usal.
Mung Sprouts Stir Fry
1-2 green chilies, slit