For this gai pad prik gaeng recipe, once all your ingredients are ready to go, turn on your stove to low heat.If your pan is too hot the curry paste will burn, so keep it on low heat and just stir fry for about 30 seconds.After your red curry paste is hot sizzling and fragrant, toss in your chicken, and season with a bit of fish sauce, and a pinch of sugar, and fry until the chicken is all the way cooked.at the end, toss in your long beans and kaffir lime leaves,stir fry for about 30 seconds.