For the batter

• ½ cup all-purpose flour
• 3 tablespoons cornflour (cornstarch)
• 1 teaspoon ginger garlic paste
• ½ teaspoon black pepper powder or freshly crushed black pepper
• 1 teaspoon soy sauce
• ⅓ cup water or add as required
• ½ teaspoon sugar or add as required
• salt as required

For frying mushrooms

• 250 grams white button mushrooms
• oil as required for deep frying or shallow frying

For mushroom manchurian

• 1 to 2 tablespoons oil
• ⅓ cup spring onions (finely chopped spring onion whites) or 3 to 4 small-sized scallions - reserve the greens for garnish
• 2 to 3 green chilies - finely chopped
• 2 teaspoons garlic - finely chopped
• 2 teaspoons ginger - finely chopped
• 1 teaspoon celery - finely chopped, optional
• ½ teaspoon black pepper powder or crushed black pepper
• 1 tablespoon soy sauce or add as needed
• 1 bell pepper (small to medium-sized), green or red or yellow sliced, diced or chopped
• salt as required