All Night Long, No Longer The original muesli took all night to make. Dr Bircher chilled oats, nuts and fruit to make them deliciously soft and digestible. For those of us who aren't as organised as Dr Bircher, we've created a muesli that goes smooth straight away, so you get all that Swiss deliciousness without having to have Swiss levels of organisation. The traditional Swiss muesli. In an instant. How We Like It Instant gratification - we love it with milk, eaten straight away. Instant grate-ification - grate on some apple for an extra traditional twist. You're in rude health when... You're a muesli mixologist.