Agreed. This is an absolutely repulsive diet, closely followed by some of the nightmares of moneyed Victorian cuisine in the other episode. You can really appreciate how much healthier they seem to come out on the wartime diet, getting a goddamn vegetable in instead of offal.
Also, the custom of pissing in the corner of the dining room is about the bottom as historically recreated culinary manners on the program go. Only Louis XVI and the Prince Regent and some Roman bits seem worse as I recall them. In spite of the obvious violence and horrible lifespans characteristic of the age, the landed medievals came across as fairly refined in terms of dietary culture.