The 'Kaffirs' were soldiers from South Africa (Mozambique), who served in the Portuguese Army. This is a chicken curry handed down from the Kaffirs, but tweaked to make it in Goan style.

Ingredients
2 kg boneless chicken
A bunch of coriander leaves 
10 green chillies
A bunch of mint leaves
5 gms green cardamom
5 gms cinnamon stick
5 gms cloves
10 gms ginger
10 gms garlic
1 tbsp turmeric powder
125 ml ground nut oil
1 onion, sliced lengthwise
Lemon juice from 2 lemons
Salt to taste

Preparation
Clean and cut the chicken into four pieces. Apply salt and turmeric powder and keep aside for half an hour
Grind the coriander leaves, mint leaves, green chillies, green cardamom, cinnamon, cloves, ginger and garlic to form a fine paste. Add the lemon juice to the paste and mix well
Marinate the chicken with this paste and keep it aside for at least 2 hours
Heat oil in a pan and sauté the sliced onions for a couple of minutes. Add the chicken, and continue to sauté for a few minutes.
Next, add one and half cups of water. Keep covered and cook till the gravy is thick and partly dry
Serve along with a small bowl of rice