Season the pieces of chicken with salt and pepper. Fry the pieces of chicken in very hot oil (in a large pan). It is enough to brown them on the outside, the inside should be raw. Once browned, set it aside.
Add the sliced garlic, grated ginger and onion in julienne to the same pan. Don''t forget to reduce the flame.
Once the onion is somewhat transparent, add the tomato cut in julienne (you don''t need to remove the skin).
Add a pinch of sugar to remove the sour taste of the tomato. Once the tomato becomes undone, add the two yogurts to the pan.
Season with salt and pepper (remember this dish must be spicy, so be generous with the pepper). Once the yogurt has mixed with the tomato and begins boiling, add the chicken.
Simmer until the chicken is cooked inside. Place the remaining yogurt in a bowl with salt and cumin to serve in each plate