What you basically do is have a fruit or two and add some greens.
Today I made one...it was 2 cupfuls of blueberries, 1 frozen banana and 1 stalk of celery. I added some herbal powder to it and liquid stevia, but it was not necessary.
It's basically a minimal fruit smoothie with any kind of green...sometimes I add just a few leaves (chopped and frozen)of kale, collards, turnip or mustard greens...you can use red leaf lettuce or romaine, any of the mixed greens for salads
You can mix then in a cup or 2 of good water, or you can use apple juice, orange juice, tea, etc. For weight loss, though, water is what I'm sure this guy used, based on the book cited.