Indian Spiced Onion Rings

Ingredients

• 2 large white onions, sliced into cm rounds
• 50g plain flour
• 30g gram flour
• 20g cornflour
• 1 tsp baking powder
• ½ tsp turmeric
• ½ tsp ground cumin
• ½ tsp garam masala
• ½ tsp chilli powder
• 1 tsp salt
• small bunch coriander, finely chopped
• 200ml cold beer (lager)
• neutral oil
• 1 tbsp chaat masala
• 3 tbsp Greek yoghurt
• 1 tsp tamarind concentrate
• lime pickle