Indian Broccoli Junka

Name: Indian Broccoli Junka
Ingredients: 3 tablespoons vegetable oil; 0.5 teaspoon mustard seed; 1 small onion, chopped; 0.5 teaspoon cumin seeds; 1 tablespoon ginger-garlic paste; 1 teaspoon chili powder, or more to taste; 1 teaspoon ground turmeric; 1 head broccoli, chopped; 2 teaspoons water; 2 teaspoons salt; 3 tablespoons gram flour (garbanzo bean flour), or more as needed; 1 teaspoon vegetable oil