Step 1

Process the lemon grass, ginger, garlic, shallot, chilli, turmeric, coriander and fennel in a food processor until a coarse paste forms.

Step 2

Heat the oil in a large wok over medium heat. Add the lemon grass mixture. Cook, stirring, for 3-4 minutes or until aromatic. Add half the coconut milk and cook, stirring, for 5 minutes or until the liquid is reduced and the paste starts to split.

Step 3

Add the chicken, sweet potato, chicken stock, kaffir lime leaves, palm sugar, fish sauce, lime juice and the remaining coconut milk. Bring to the boil. Reduce heat to low and simmer, stirring occasionally, for 15-20 minutes or until the chicken is cooked through and the sweet potato is tender. Top with basil leaves and serve with rice.