Grind the Spice Paste ingredients in a mortar or blender, adding a little oil if necessary to keep the blades turning.
Heat the oil in a saucepan over medium to high heat and stir-fry the Spice Paste for 3 to 5 minutes until fragrant. Add the peanuts, tamarind juice and water, and season with salt and sugar. Reduce the heat to low and cook for another 3 minutes