Maximilian Oskar Bircher-Benner, M.D. was a Swiss physician and a pioneer nutritionist credited for popularizing muesli and raw food vegetarianism.

Muesli is a cold Swiss breakfast dish, the primary ingredient of which is rolled oats. Traditionally, it is set to soak overnight and eaten the next morning. Additional ingredients, such as grains, nuts, seeds, and fresh or dried fruits are sometimes added, along with milk or cream, a small amount of citrus juice, and honey to add sweetness. Yoghurt, other milk products, or milk substitutes are now commonly added to both homemade and commercially packaged muesli recipes.