In a large mixing bowl, combine the flour, water, eggs, garlic powder, salt, and black pepper. Whisk until smooth.
Fold in the chopped enoki mushrooms and green onions until evenly distributed in the batter.
Heat 1 tablespoon of vegetable oil in a non-stick skillet over medium heat.
Pour about 1/4 cup of the batter into the skillet for each pancake, spreading it slightly to form a round shape.
Cook for 3-4 minutes or until the edges start to turn golden brown. Flip and cook for an additional 2-3 minutes on the other side until golden and cooked through.
Repeat with the remaining batter, adding more oil as needed between batches.
Serve warm with soy sauce or your favorite dipping sauce.