Birchermüesli is a Swiss-style muesli that was invented by Swiss physician Maximilian Bircher-Benner. It is made with rolled oats, grated apple, yogurt, and sometimes nuts and dried fruits. The ingredients are mixed together and left to soak overnight, allowing the flavors to meld together. Birchermüesli is a healthy and refreshing breakfast option that is popular in Switzerland and enjoyed by many for its nutritious qualities.