Vegetable pakoras

Name: Vegetable pakoras
Ingredients: 250g/½lb gram flour (chickpea flour); 50g/2oz self-raising flour; ½ tsp red chilli powder; 1 tsp garam masala; 1 tsp tandoori masala powder (optional), available from specialist asian supermarkets; 1 tbsp lemon juice; 300g/10½oz potatoes, peeled and cut into small pieces; 300g/10½oz onions, finely chopped; 3 spring onions, trimmed, finely chopped; 6-8 spinach leaves, finely chopped; Handful fresh coriander leaves; 1 tsp chopped green chilli; 1 tsp salt; Sunflower oil, for deep frying