Trim the bottom of the enoki mushrooms and clean them.
Cut the tofu into bite-sized pieces.
Slice the onion and green onion.
Heat cooking oil in a pan and grill the tofu until golden brown.
Place the enoki mushrooms, onion, and green onion on top of the grilled tofu.
Mix soy sauce, water, minced garlic, chili powder, oligosaccharide, and pepper to make the sauce.
Pour the sauce evenly over the tofu and vegetables.
Cover and simmer over medium-low heat until the sauce reduces.