How to Make It
In a bowl, cover the dried chiles with boiling water and let soak until softened, about 20 minutes. Drain the chiles and coarsely chop them.
Heat the vegetable oil in a small skillet. Add the chopped garlic and sliced shallots and cook over moderate heat, stirring, until lightly browned, about 4 minutes. Using a slotted spoon, transfer the garlic and shallots to a plate. Add the peanuts to the skillet, reduce the heat to low and cook, shaking the pan, until toasted and browned, about 3 minutes. Add the peanuts to the plate.
In a large mortar or mini-processor, grind the coriander root, lemongrass, galangal and salt to a paste. Work in the halved garlic cloves and chopped shallots. Add the soaked chiles, browned garlic mixture and lime leaves and pound to a coarse puree. Stir in the shrimp paste, cinnamon and cumin.