Cut into 2 to 3 cm (1 inch) cubes; set aside in a medium-sized bowl.

Make a marinade of all ingredients from the sesame oil down to the soy sauce inclusive. (For a basket type air fryer, melt the duck fat by zapping for a few seconds in the microwave and stir it in.)

Pour the marinade over the tofu cubes, mix.

Let marinate for at least 30 minutes, tossing a few times. If you feel like you just need more liquid, add some more fish or soy sauce.

In the Actifry™ (or similar air frying pan) pan, melt the 1 teaspoon of duck (or goose) fat. Add the tofu cubes and cook for 20 minutes: 25 to 30 mins for extra crispy.

In a basket type air fryer, cook in the basket at 180 C (350 F), turning or shaking every 10 minutes or so.