Onion bhaji - spicy onion fritters

Ingredients

• 200 grams red onion
• 0.5 teaspoon salt
• 1 green chili
• 3 cm fresh ginger
• 3 garlic cloves
• 90 grams chickpea flour
• 50 grams rice flour (or cornstarch)
• 0.5 teaspoon baking soda
• 0.5 teaspoon (Kashmiri) chili powder
• 1 teaspoon ground coriander
• 1 teaspoon garam masala
• handful of fresh curry leaves (optional)
• water
• neutral oil for frying (like sunflower oil)
• tamarind chutney to serve