Just some ordinary foodstuffs for players to choose among, including some things which would be unfamiliar to many North American palates: rabbit & goat sausage, or cicitt and salsiccia de coniglio, for example. I will eventually add more things like this ... any kind of different and unusual food is a bonus in my book.
The daily portions for dogs, leopards and hippogriffs are included because these animals are available for purchase in my world ... though I wouldn't recommend the leopard or the hippogriff at low levels. The meat for these animals is cheaper as it is based upon the abattoir meat price, which is the cost of the slaughtered animal without the various niceties of separating the meat for human consumption. In other words, the collection of animal body parts we associate with supermarket hot dogs. The amount of consumption is based upon the carnivorous creature's body weight: 35 lbs. for dogs, 133 lbs. for leopards and 400 lbs. for a hippogriff (which, although the size of a horse, doesn't weigh nearly as much).
The reader will please note the difference between an ordinary pates and pates de foie gras. The latter, of course, makes an interesting treasure possibility. While I think of it, the weights are based on the best specific gravity numbers I could find on the web. If you don't think it is hard to find the specific gravity of pates de foie gras, you haven't lived. With my luck, though, someone has posted the number since I spent considerable time trying to find it a year ago.
We live in a wonderful age of information, you know. When you consider the above list in terms of player caloric intake and nutrition, it's interesting to note that we have all the information we could ever want. Consider the table on this site, describing how many calories a player could obtain from various wild birds taken from hunting. Or this breakdown of calories and nutritional content available in chicken. That popular post I wrote about nutrition only needs someone (me, perhaps someday), to sit down with all the various foods and build up the necessary database to identify character health.
But then, "It requires a crap-ton of energy on the DM’s part to keep the campaign world living/breathing/evolving/resolving as the PCs podunk around the imaginary country-side." As people involved in a game intended to take a world and put it in a bottle, the last thing we'd want to do is expend any energy. Ah, hem, excuse me ... that is, expend any 'calories.'