German police are investigating a chilli sauce to determine whether it was so spicy that it was capable of causing grievous bodily harm when used in an attack. Police took a sample of the sauce from a kebab stand in Bremen's central train station after a kebab salesman threw it into the eyes of a customer during a fight over napkins. "Legally, the question of whether the spiciness of the kebab sauce constituted 'normal' or grievous bodily harm must be addressed," local police in the northern city said on Friday.