I make a homemade replacement shake that is filling and it can be adjusted or modified as one pleases. 12 oz Unsweetened almond milk (since I don’t tolerate cow’s milk easily). 1/4 – 1/3 C Plain eggwhite powder. Berries. Cooked steel cut oats 1/4 cup (I cook up a batch and freeze it in an ice cube tray, then pop them out and bag them). 2 tablespoons flax seed meal (helps with constipation and is a good fat). I found it necessary to start slowly with the flax because it caused discomfort. Moved up bit by bit to 2 TBL. A few weighed out walnuts. Sometimes I add favorite spices like cinnamon, cardamon. Sometimes some xylitol that i saw mentioned in the book. I’m playing around with whole milk goat kefir as a shake base too. Sometime I might try whole goat’s milk and delete the walnuts. Then I write down the ‘recipe’ with calories, fat, protein, and carbs for later reference.