With Boise’s Basque community and the city’s historic Basque district being a treasure trove of authentic flavors, you’ll stumble across this culinary gem (pun intended). The Spicy Lamb Grinder is a sandwich served at Bar Gernika. For years, this local spot has served up customers with its unique take on a mouthwatering lamb sandwich. The Spicy Lamb Grinder found itself on a list of “Sandwiches invented in every US state,” according to LoveFood.com.