Step 1

Soak the onion in cold water while you make the base mix. Sift the flour and baking powder into a bowl, then add the chilli powder, turmeric, chopped chilli and a good sprinkling of salt. Mix in about 100ml of cold water to make a thick batter – add a splash more if it feels too stiff.

Step 2

For the raita, peel the cucumber and grate it into a sieve set over another bowl. Mix the remaining ingredients with some seasoning and the drained cucumber – squeezing out any extra moisture with your hands – then spoon into a small serving bowl.

Step 3

Drain the onion well and mix it into the batter. Heat about 5cm of oil in a wok or deep pan. Do not fill the pan more than a third full. Add a tiny speck of batter. If it rises to the surface surrounded by bubbles and starts to brown, then the oil is hot enough for frying.

Step 4

Lower heaped tbsps of the bhaji mixture into the pan, a few at a time, and cook for a few mins, turning once, until they are evenly browned and crisp, so about 3-4 mins. Drain on kitchen paper, sprinkle with a little salt and keep warm while you cook the rest. Serve with the raita.