Toast the Thai sticky rice in a dry pan over medium heat until golden brown. Allow to cool, then grind to a coarse powder.
Place a small amount of water in a pan and bring to a gentle simmer. Add the chicken mince and cook, stirring regularly, until no pink remains.
Remove from the heat.
Season with lime juice and fish sauce to taste, then stir to combine.
Add the crushed toasted rice and chilli flakes, mixing well. Fold through the chopped mint and fresh coriander.
Taste and adjust the seasoning with additional lime juice or fish sauce if required. Serve immediately.