Prepare all the ingredients and keep ready
Heat oil in a pan and add the cumin seeds
When they sizzle and turn brown, add the onions
Sauté until the onions turn soft and a light brown around the edges
Add the ginger and garlic and fry for a minute until fragrant
Add the spices - coriander, cumin powder, chilli powder, turmeric - and fry again for a minute until they turn fragrant. Take care not to burn the spices at this stage by keeping the flame low
Now add the tomato paste (if using), cut tomatoes, and capsicum
Mix well, add 1/2 cup water, and cook for a minute
Then add the chicken strips, mix again, and cook covered for 10-12 minutes or until the chicken is cooked through
Check in between to give the curry a stir and keep heat to medium- low. The chicken will let out water while cooking so the dish shouldn't burn but keep an eye on it every 3-4 minutes by giving everything a good stir
Once the chicken is cooked, uncover and cook on a medium flame in the open pan for a few more minutes. The gravy should be thicker by now and not watery (which is what we want)
Add salt, sugar, garam masala, and kasuri methi
Stir, check the taste to see everything is balanced well
Add coriander leaves at the end and mix again before removing from the heat
Serve chicken jalfrezi hot with rice or rotis