First heat the oil, add ginger garlic paste then add chicken and (bhoonlain)
Mix it for few mints, then cut tomatoes & Mix it.
Now add all the masalas and mix it well until the tomatoes gets soft (galjayen).
At the end add yogurt and karhai masala (lil amount).
Let the water be dried out, then add butter and now low the temperature of your stove.

Now slice the ginger and green chilli, coriander for garnishing and add it to your karahi...

So now, your karhai is ready to serve.