We love Mai Poi brand green curry paste (I actually have 4 different curry pastes from this brand, love them all). I like to use 1-2 tablespoons of it for a nice medium curry. It’s warm but not so hot that my kids won’t eat it (they don’t mind a little heat but they don’t want it super spicy). You can also use red curry paste. Just know that it tends to be spicier.