This video shows you how to make one of America's most delicious yet relatively unknown sandwiches, the Beef on Weck. This is Part 2, where you make the pan-roasted sirloin. Sirloin roasts are tender, flavorful, and easy to slice thinly, which is one of the keys to this incredible sandwich. Watch the video, then get the recipe for Beef on Weck. Serve with chips or fries, and pickles. And dunk away into the steaming beef jus.