Yellow spice

Yellow spice is one of four spices dropped by Hellrats in Evil Dave's basement. If yellow spice is used in a stew, it becomes a Spicy stew, which can temporarily raise the stats of Prayer, Agility, Slayer, Thieving, and Hunter. The amount it can raise these stats depends on how many doses used in the stew (between one and three). Each dose of spice can cause the boost to either increase or decrease a stat by -2 to +2. Once all 4 doses are used, it becomes an Empty spice shaker, which cannot be used for anything.