BE PEZ be ignorant in the matter in question. It does not refer to the water fish, but to a yellowish resin with which the tanned leather is polished and a longer duration and quality is achieved. The fish, feminine because it is a resin, was widely used in boots in which wine or oil was stored. Once it was well tanned it was sewn and finished. The inside of the odre contained only the fish and hence the analogy with an empty and ignorant grinder. Some synonyms, words or similar expressions may be ignorant, be lego
