Wash the chicken. Cut into pieces
Pour oil in a frying pan on medium heat, add coconut milk (1 cup) to the boil, add Mae Supen Yellow Curry Paste. Stir until fragrant and coconut cream is cooked. Then add the chicken. Simmer over low heat 10-15 minutes.
Put the onion, potatoes and remaining coconut cream add fish sauce, sugar, pepper and salt. Simmer for another 15-20 minutes until potatoes are tender, then remove from heat.
Place into a bowl and serve immediately with Thai Black Cargo rice.