Wrap the tofu in a dry cloth and press
it with a weight to drain. Cut it in half and then into three parts
horizontally.
Cut the purple onion into thin slices.
Seed the red chili pepper and cut it into thin round slices.
Combine the marinade ingredients, the
onion and the chili pepper in a large flat container, and mix briefly to
make a sauce.
Preheat the oil to 330 F. Slice the tofu
into it. When it comes to the surface, deep-fry it over high heat for
about 10 minutes until it is golden brown and crisp.
While the tofu is still hot, drop it
into the marinade, and marinate it for 30 to 40 minutes. Garnish with
the purple onion and coriander and serve.