While the tofu is draining, prepare the salad dressing. Mix fresh herbs, chopped shallots, toasted rice powder, fish sauce, MSG, red pepper flakes, and fresh lime juice in a large bowl.
15 ml fish sauce, 22 ml fresh lime juice, 3 g MSG or sugar, 5 g toasted rice powder, 2 g Thai chili flakes, 10 g mint, 10 g coriander, 30 g shallots