To prepare the prawns, shell, vein, remove the head, but leave the tail attached.
Chop the chiles finely and mix with the cilantro root and chopped garlic. Add the nam pla, sugar, and lime juice so that a sour taste predominates.
Place a bed of shredded cabbage on a serving plate, and arrange the prawns on the cabbage. Place the peeled garlic cloves next to the prawns. Just before serving, pour the sauce over the prawns and sprinkle with mint leaves.