Milkshake Diet. Eat Breakfast, Lunch, Dinner and a Snack: Each meal consists of 1 Diet Milk Shake made in a blender with 1 cup skim milk, 1 cup cottage cheese, ½ teaspoon vanilla extract or 1 tablespoon Walden Farms or Hershey’s sugar-free chocolate syrup, 4 packets Equal, 4 ice cubes.