Note from Ricardo Overnight Oats or Bircher Muesli was developed at the turn of the last century by Maximilian Bircher-Benner, a Swiss doctor, and is still a very popular breakfast throughout Switzerland and Germany. The oats need to be soaked before being eaten. During the process, the oats absorb the liquid and plump up into a hearty, thickened porridge. This breakfast can be made up to 48 hours in advance.
