Okay, yeah.. CORPSE definitely didn't work... You were right, the dwarf used a booze barrel instead. To punish them, I flooded the world with magma.
I think I'm going to use your suggestion of the special corpse grinding tag material. The only problem is testing it will take some time, as I'll have to wait for subjects to show up. I'll give it to humans & elves too, for more guinea pigs.
Since I want to stick with the dwarven default ethics, grinding corpses of sentients won't produce food. Instead, my plan is for the grinder to produce some useful stuff. I think it'll produce a few balls of flesh for building goblin flesh monuments (a good way to measure how many you've killed!) and some blood (even though liquids are pretty much unusable as reagents right now). Any other ideas as to what comes out of the grinder when you throw an enemy corpse in?
Anyways, as testing that will take awhile, I'm currently working on a new workshop: the Stove & Oven (couldn't think of a better name). It's reaction will require fuel (there's a magma version, of course), but it will be the focus of a lot of the future of this mod. Currently I've got bread in the works, but there's gonna be a lot more
Also, as a secondary part of working with bread, baking soda, yeast and salt will be making an appearance. Edible salt will be made through refining rock salt, and baking soda is made from nahcolite, a soft, white rock that can be found in rock salt clusters (it occurs naturally near rock salt IRL too). I'd like to make sea salt available, but I'm stumped as to how. I've gotta learn more about yeast to figure out how the dwarves will get their hands on it.
Bread Reaction
Step 1 (Kitchen) :: Flour + Tallow (butter will have to wait until I can use milk) + Salt + Yeast = dough
Step 2 (Stove & Oven) :: Dough + [FUEL] = Loaf of bread (probably will come as a number of slices, each quite valuable)
Muffin/cakes/quick bread will be made with baking soda.