Don’t have a mortar and pestle? Try this hack: Put the galangal, cilantro and garlic into a food storage bag. Squeeze out all the air and close the bag. Give the aromatics several whacks with a rolling pin or the back of a frying pan until they become a paste. Carefully pour the contents into a mixing bowl and add the remaining marinade ingredients. Leftover dressing will keep in the refrigerator for up to 3 days and pickles for up to 2 weeks. If you’re in a pinch and can’t find galangal, substitute with ginger.