Cut off the base of the enoki mushrooms and wash them under running water.
Slice the green onion and mince the garlic.
Heat cooking oil in a pan, then sauté the green onion and garlic until fragrant.
Add the enoki mushrooms to the pan and stir-fry.
Add soy sauce, water, sugar, red pepper powder, and sesame oil, then simmer.
When the sauce thickens, finish and serve.