Optional - Courgettes ,carrots, beans or boiled potatoes can be added to make it a one pot main.
Instructions
Wash tuna with lime/lemon juice and cool water
Use a wide pan place fish cubes without overlapping each other
Add all ingredients and enough water (1/2 cup) to cover the tuna pieces, retaining half the coconut milk to add at the end for extra creaminess. If creaminess is not a must, all the coconut milk may be added at once too.
Bring to boil quickly and simmer over low heat ( approx 25-30 minutes) until the curry starts to thicken slightly and the fish is cooked.