Score both sides of the konjac block in a grid pattern and cut into bite-sized pieces.

Boil water in a frying pan, add the konjac, and re-boil. Drain to remove odor.

Slice the white part of the green onion thinly and diagonally slice the green part.

Heat sesame oil and garlic in a frying pan until fragrant, then add konjac and fry over medium heat until browned on both sides.

Add the white part of the green onion and stir-fry briefly until coated with oil.

Add sake and salt, stir-frying until the liquid evaporates.