Who was Maximilian Bircher-Benner?

You’re probably familiar with muesli. Birchermüesli, an apple diet dish devised by Maximilian Bircher-Benner at the turn of the century, “d Spys” as he called it, is the ingenious implementation of his ideas. Diet according to Birchner-Benner His theory states that plant food contains the most solar energy and therefore is much healthier for humans … Who was Maximilian Bircher-Benner?