Question: how are rocky mountain oysters prepared?
Answer: Split the tough skin-like muscle that surrounds each "oyster" (use a sharp knife). ...  Soak in a pan of salt water one hour; drain. Transfer to a large pot and add enough water to float the meat. Add the vinegar to the pot. Parboil, drain and rinse. Let cool and slice each oyster into 1/4 inch thick ovals.