In a medium saucepan add 2 tbsp of KEEN’S curry powder, garlic powder and stock. Then add the chicken and bring to the boil.
Simmer for 20 minutes until the chicken is cooked through.
Remove the chicken and use two forks to shred the chicken into thin strands.
Combine the mayonnaise, remaining KEEN’S curry powder, spring onion, coriander leaves and stir well. Mix the chicken through the mayonnaise and serve in a warmed hamburger bun.