There is also sometimes a bit of a misconception about how much protein is involved and how much of that needs to be from meat.
As you can see from the two veggie diet plans, none of it needs to be from meat, and a person could also mix-and-match, using some animal proteins and some non-animal proteins.
But for those who do eat meat, each serving in this version of the Brewer Diet is only 1 oz in size. The usual serving size that people are familiar with from the Department of Agriculture, I believe, is 3 oz in size. A 3 oz serving of meat is about the size of a deck of cards. Therefore, a 1 oz serving of meat on the chart from my website is about the size of 1/3 of a deck of cards.
There is often some confusion about this because the first book from the Brewers used the 3 oz size for the meats--and it recommended 2 servings from the "Protein" food group (2 times 3 oz = 6 oz of meat proteins or their equivalent), in addition to the servings of milk and eggs. And this is the size that is used by the official Bradley website. But the later Brewer books called for 1 oz servings and 6-8 servings of meat proteins or their equivalent.
On my website I have gone with the later Brewer way of doing this calculation, because it seems to me that by doing that, all the protein servings, from all sources, have about the same number of grams of protein in them, and it seems more standardized to me.
But I do think that this discrepancy between the earlier book (and the Bradley way), and the later books and some websites (like mine), does lead to some confusion for the pregnant moms, and their care-givers at times too.