It seemed a bit unfair because the calf bone are sort of a key ingredient in what is essentially a reduced veal stock. However, the more I thought about it, the more it made sense. I sometimes forget that people do not live in restaurants, where things like veal knuckles are as ubiquitous as kale.
In is possible hypocrisy aside, this alternative method worked surprisingly well, and above and beyond the almost identical look and feel, the flavor was surprisingly close. It did not taste like chicken or beef, but was somewhere in the middle, which is basically how I would describe the veal taste. I really hope you give this cheaper version easier, and perhaps more ethical to try soon. Enjoy!
Makes about 2 liters of "Cheater" Demi Glace:
5 whole chicken wings books
2 pounds of beef shanks (thick slices about January 3 inch)
2 onions, chopped (including skins)
2 carrots chopped
3 stalks celery, chopped
3 tablespoons of dough tomato
6 liters of cold water
bay leaf
1/2 teaspoon whole black peppercorns