Start by draining the firm tofu and pressing it to remove excess moisture, then slice the tofu into even pieces, about half an inch thick.

Set up a dredging station with flour, plant-based milk, and breadcrumbs. Coat each tofu slice in flour, dip in milk, and coat with breadcrumbs.

Heat oil in a frying pan over medium heat, then gently lay the breaded tofu pieces in the pan, frying for about 3-4 minutes on each side until golden brown.

Prepare your tonkatsu sauce by combining soy sauce, ketchup, and mirin in a bowl, or set aside store-bought sauce.

Transfer the fried tofu to a paper towel-lined plate, then serve with tonkatsu sauce drizzled on top or on the side for dipping.