There’s more to this anecdote than meets the eye.
According to a handy-dandy online calorie calculator, and based on calculations using available modern foods, “Diamond” Jim Brady was, in my scientific opinion, something like the shape of a Volkswagon beetle.
2 eggs, large (158 calories)
3 medium pancakes (312 calories)
2 2.5z pork chops (332 calories)
2 pieces cornbread (396 calories)
2 cup hash browns (326 calories)
2 muffins (187 calories)
1 steak 3.5z (201 calories)
128oz orange juice (1743 calories)
This totals 3,655 calories, not including the hominy as specified, also not including dozens of clams or oysters, nor anything else to eat that day. If he ate like this once per day and had nothing else he’d be about 350 pounds.
If “Diamond Jim” Creosote ate like this for 3 meals every day for some length of time, we would know him as one of the fattest men in history at somewhere near 1100 pounds. Therefore, something must be wrong with the information as we understand it, or with the calculations as I made them.
a) The eggs of yesteryear may have had a different caloric content due to modern poultry-raising techniques. Were chickens of that era corn-fed, free-ranged, or what?
b) The pancakes might have been much smaller than the calorie calculator assumed; perhaps they were palm-sized or smaller instead of massive flabby Denny’s-style cakezillas.
c) Pigs may have been raised differently, to be more muscle tissue and less fatty, lowering calorie content. Also, I may have the portion sizes incorrect.
d) Cornbread in the day might not have used enriched flour or corn meal?
e) What did they fry the potatoes in and how much of them did he have?
f) What was the muffin recipe?
g) I couldn’t find “beefsteak” listed, so the obvious error here is to find the exact recipe for what he ate and how many calories it has.
h) This is the big one. All of the above is just nit-picking compared to the 1700 calorie whopper of calories by OJ. Of course, even assuming that the OJ of the day was freshly squeezed and about 50% of the calories (no added sugars), it’s still easily the biggest part of this one meal (not including any other meals of the day). Was it possible that the “gallon of orange juice” is either a humorously exaggerated estimate? Or was the term “gallon” as used back then not what we know today as 128 fluid ounces? As nearly as I can tell, our definition of a gallon (for liquid measure) was standardized in the 19th century as the volume of a cylinder 6 inches long by 7 inches in diameter and hasn’t changed since.
Unscientific conclusion: he ate a lot of food back then, by the standards of the day. Those standards either no longer apply precisely because the portion size or caloric content of the food no longer matches our thinking of today; or he only ate once a day and weighed 350 pounds; or he only ate like this occasionally to impress people; or this kind of eating was a habit but “Diamond Jim” was really “Porcelain Jim” when nobody was looking.