Mini shallot bhajis with minted yogurt

Ingredients

• 400g shallots, thinly sliced
• 1 tsp salt
• 175g gram flour (chickpea flour)
• 1 long red chilli, finely sliced
• 1 tbsp nigella (black onion seeds)
• 1/2 tsp turmeric
• about 200ml cold water
• vegetable oil, for deep frying
• 200g yoghurt
• 4 sprigs mint, leaves picked and chopped
• 1 clove garlic, crushed
• salt and freshly ground black pepper