Rinse the bean sprouts with cold running water, drain, and set aside. Remove the roots if desired.
Heat up a wok and add some cooking oil for pan-frying the tofu. Once the oil is fully heated, pan-fry the tofu until they turn light brown on the surface. Transfer the tofu to a dish lined with paper towels.
Leave about 1 tablespoon of oil in the same wok, stir-fry the garlic until aromatic, then add the tofu back into the wok for a few quick stirs. Add the bean sprouts, soy sauce, and scallions, and stir for a few more seconds. Dish out and serve immediately.
Notes
Bean sprouts should be crunchy and just cooked when served. Do not overcook bean sprouts as they lose the crisp and crunchy texture.