Cut the tofu into cubes. Also, dice the garlic and onion.
Cook the tofu cubes in boiling water for two minutes or until you see small bubbles. Strain the tofu and set it aside. This step helps get rid of any unwanted soybean or refrigerated flavor for a cleaner taste.
Make the cornstarch slurry by mixing ¼ cup water with 2 teaspoons corn starch and set aside.
Heat a large pot or wok. Add the oil, then add the diced onions and garlic to the pot. Saute for 1-2 minutes or until the garlic is golden.
Add the sake to the pot and 1 ½ cup of water.
Next, add the oyster sauce, more chili oil, bouillon, and soy sauce. Mix together and cook for one minute.
Gently add tofu to the pot and gently mix everything together.
Add the corn starch slurry. Make sure to give it a stir before adding to the pot. Cook for 1-2 minutes.
Finish off with 1 teaspoon sichuan peppercorn oil if you love that mala numbing taste ◡̈ Hope you enjoy!