Remove the root of the enoki mushrooms and tear them into bite-sized pieces.
Slice the onion and carrot thinly.
Chop the green onion.
Heat cooking oil in a pan and stir-fry the onion and carrot.
Add the enoki mushrooms and stir-fry, then add soy sauce, sugar, minced garlic, and sesame oil and simmer.
When the sauce thickens, finish by adding green onion and pepper.