This section is from the book "Practical Dietetics With Special Reference To Diet In Disease", by William Gilman Thompson. Also available from Amazon: Practical Dietetics with Special Reference to Diet in Disease.
I recommend the following dietary (alternatives in brackets):
A sour orange [grape fruit, melon]; eggs, scrambled, with much butter; fresh mackerel [salmon or other fat fish]; two slices buttered toast, three inches square, one-third inch thick = about one ounce; coffee, with cream and saccharin.
A cup of tea with cream and saccharin; a baked apple with cream; a slice of buttered toast (as at breakfast).
Meat soup; fresh fish with butter sauce; cucumbers with oil; entree, marrow bones; meat (any sort); a baked potato (three inches long), well mashed, with much butter; string beans [cauliflower, vegetable marrow, Brussels sprouts, onions, asparagus with butter sauce]; (fat corn-beef and cabbage or pork and sauerkraut may be allowed once a week); game; sliced tomatoes with oil; baked custard [blancmange made with diabetic milk and saccharin; fruit jelly made with gelatine and imbedded fruits, unsweetened]; black coffee; very dry Moselle or champagne.
This dietary should be varied from time to time. As the tolerance for carbohydrates increases the fats may be reduced, and vice versa. If after a test diet of animal food exclusively there is still glycosuria and weight rapidly diminishes, meats should be replaced to the extent of not more than one-half by carbohydrates and fresh fruits and vegetables. If, with a test diet of carbohydrate-free food, to which 100 grammes of bread is added, no sugar is excreted, but it is excreted with 200 grammes of bread added, then a moderate toleration for bread is demonstrated, and it may be given up to this limit of, say, 100 grammes per diem.
In the poor man's anti-diabetic dietary, pork, bacon, tripe, cabbage, sauerkraut, carrots, turnips, onions, leeks, and milk cheese may form the basis of the heavier meals. Lard, suet, and margarine should be used freely in the cooking.
Sugar in any form - sirup, molasses, confectionery, jams, and sweets of all kinds; honey, for it contains dextrose and levulose.
All the elementary forms of starchy and farinaceous food, such as rice, sago, tapioca, arrowroot, oatmeal, cornmeal, hominy, samp, buckwheat, barley, semolina, macaroni, spaghetti vermicelli. All pastry, cake, puddings, pies of every description - in short, everything made of flour excepting a little bread as specified above.
Potatoes, beets, carrots, parsnips, turnips, peas, beans (except string beans), lentils, cauliflower, broccoli, Brussels sprouts, rhubarb. Some writers, like Dujardin-Beaumetz, occasionally allow a well-baked potato in mild cases. It contains only 15½ per cent of starch, or one fifth as much as rice, and one half as much as peas and beans.
The soft parts or livers of clams, oysters, and mussels contain glycogen. By some these foods are entirely forbidden, but many diabetic patients can take them occasionally without injury.
Liver of all animals (it contains glycogen), pate-de-foie-gras.
In regard to the use of fruits there is some difference of opinion. Sweet fruits, such as figs, dates, plums, prunes, bananas, apricots, all preserved, candied, or sugared fruits must be absolutely interdicted. Pears, melons, and berries are forbidden by many, but allowed by others.