Murgh KaliMirch - BlackPepper Chicken

Serves - 2-3
Preparation time - 25 minutes (includes marination time)
Cooking time - 20 minutes
Ingredients 

1 lb boneless, skinless chicken thighs, cut into 2" cubes
For garnish - chopped cilantro, scallions
Fresh lemon/lime juice (to taste)

To marinate :-

2 tbsp thick plain yogurt
1.5 tbsp fresh lemon/lime juice
4 garlic cloves, minced
2" fresh ginger root, minced
1.5 tbsp black peppercorns, coarsely ground
1 tsp kashmiri red chilli powder 
1/4 tsp turmeric powder
1/2 tsp salt

For tempering :-

2 tbsp mustard oil (substitute with sunflower/vegetable/canola oil)
1 tsp black mustard seeds
2 serrano chillies, chopped (adjust to tolerance)
1 tsp coriander seeds
1 tsp cumin seeds
salt (to adjust)

Method :-

Marinate the chicken in all the ingredients listed for 20 minutes, refrigerated. 
Once ready to cook, take out the marinated chicken from the refrigerator & let sit on countertop.

In a thick bottomed, wide mouthed pan, heat up the oil on high.
If using mustard oil, heat it to a point when its slightly smoky.
For other oils, heat up till you see ripples on the surface. 
Meanwhile, using a mortar & pestle, coarsely grind the coriander & cumin.
Once the oil is heated, reduce the heat to medium & wait for 2 minutes. 
Add the mustard seeds & let them crackle.About 10-15 seconds. 
Also, add the chillies next & let them crisp up for another 10-15 seconds. 

Tip :- Be extra careful, mustard seeds & chillies splutter a lot when added to oil. 

Next, add the coarsely ground spices to the oil & stir for about 30-35 seconds or till you smell the aroma. 
Start adding marinated chicken 5-6 pieces at a time to the pan and  stir-fry over high heat for few minutes, tossing continuously.
Repeat with another batch of chicken pieces. 
The idea is to lightly brown the outside of the chicken but still keep it juicy inside.Lower the heat once all the chicken has been added.
Add the leftover marinade(if any) & stir frequently. 
Cook on low heat till the oil separates on the sides of the pan and the chicken is cooked. About 12-15 minutes. 
You can cover the pan for last 3-4 minutes of cooking. Adjust the salt, toss well and remove.Let sit covered for atleast 10 minutes before serving.

Garnish with chopped cilantro or scallions, squeeze fresh lemon juice & serve hot.

Notes:-

The cooking times will differ depending on the size of chicken pieces and the cut used. If using chicken breasts, the cooking time will be about 6-8 
minutes for 2" cubes.
If you like dish less hot, de-seed the chillies before you mince them.