Begin by cooking your chips in your favourite way. You could cook air fryer chips, chip shop chips or even oven chips. Your timings for the recipe will change based on this choice. My timings are based on air fryer chips.
Whilst the chips are cooking, cut the red onion in half, peel it and then slice it into half-moon shapes as finely as you can.
Peel and finely chop the garlic cloves.
Deseed the chilli pepper and then dice it as finely as you can. You can leave the seeds in or remove them as you wish.
Deseed the tomato and cut it into a 3-4mm dice. Discard the seeds.
Finely chop the fresh coriander.
Combine the tomato ketchup, mango chutney with the curry powder, fenugreek leaves, garam masala and turmeric.
3 minutes before the chips are cooked, heat a large wok or very wide-based pan over a medium-high heat.
When the oil is hot, throw in the garlic and stir-fry for 30 seconds, or until it just starts to become golden.
Add the tomato ketchup mix and simmer for 2 minutes to cook out the spices.
Add the cooked chips and toss to coat thoroughly.
Toss in the red onion, chilli, tomato and coriander (keep a little back for garnish), toss to combine.
Serve sprinkled with chaat masala, the rest of the coriander and coarse sea salt.