Snape nodded approval at the questions. They varied from the pertinent to the positively insightful. "Vinegar and salt will be fine, follow up with an Aguamenti rinse and a drying charm. The dipper's stems should be cut to 13 inches long, and the cups should be 3 inches diameter and 3 inches deep. Good idea with the ginseng; get out one root and put it in a jar with a juvenile mandrake root; it'll help if they get to know each other overnight.
Actually, speaking of prep I should come with you; if I grate the Chinese Fireball claw now, I can leave the powder to cure overnight. It'll be less explosive that way."