Ingredients: 2 tablespoons butter,3 tablespoons extra virgin olive oil,2 to 3 pounds young lamb, from the leg, cut into bite-sized chunks,2 sprigs rosemary,1 tablespoon salt, plus more,2 salt-packed anchovies, rinsed and drained,1 cup white wine,1 tablespoon white wine vinegar,2 cloves garlic, whole, plus 1 clove, finely chopped
Instructions: