1Heat oven to 375°F. Unroll each can crescent dough into long rectangle. Firmly press perforations to seal. Using a small knife, cut dough into 1-inch by 4-inch strips. (Cut number of strips to match number of cocktails links in package--about 48.)
2Wrap each cocktail link with 1 dough strip around middle of link. Place on ungreased cookie sheet, seam side down, about 2 inches apart. Bake 10 to 12 minutes or until golden brown.
3In large bowl, toss grated cheese with the flour. In 2-quart saucepan over medium heat, swirl in the olive oil. When shimmering, add the garlic; cook 30 seconds until very fragrant. Add stout, apple juice concentrate, ground mustard and Worcestershire sauce. Heat to a simmer (let simmer 3 minutes if you want alcohol to evaporate) and gradually, in small batches, add cheese, constantly stirring until fondue is smooth, thick and cheese completely melted. If too thick, stir in an additional oz of stout until desired consistency.
4Serve fondue immediately with pigs in the blanket.