In the pitcher of a blender or bowl of a food processor, add the galangal/ginger, cilantro, chilies (remove the seeds if spice is a concern), salt, lemongrass, garlic, beer, coriander, peppercorns, cloves, onion and kaffir leaves (if using). Pulse to begin to break up all the ingredients and increase the speed to high, mixing until a smooth paste forms, about 4 – 5 minutes. Pour this paste into a mason | ball jar and refrigerate for up to three weeks.