place the Dried red chilli, Garlic, Lemongrass, Banana shallot and Galangal in a food processor or pound in a mortar and pestle to form a paste, adding a splash of water if required.
Heat the vegetable oil in a saucepan over medium heat and add the spice paste. Cook until aromatic.
Add the crushed Peanuts and cook for 1 minute to roast.
Stir in the Water, Tamarind paste, Sea salt, Granulated sugar, Ground coriander and Sweet soy sauce.Simmer for 5–10 minutes until thickened. The oil should begin to separate from the sauce.
Thread the chicken onto the soaked skewers.
Cook the satay skewers, turning regularly and basting with Vegetable oil until cooked through.
Baste lightly with vegetable oil while cooking.
Serve hot with peanut sauce, cucumber and onion.