Using the Demiglace - Pan Sauce for Steaks

I came up with the following because I wanted to taste the demiglace in a relatively simple sauce.

Pan Sauce for Two Steaks
2 cooked steaks (grilled, pan-fried, or broiled)
3 tablespoons (shot glass) cognac
1/2 cup no or low salt veal or chicken stock (see previous post for veal stock recipe)
1 tablespoon homemade veal demiglace (see previous post for recipe)
3 tablespoons unsalted butter
salt and black pepper to taste

Add cognac to pan on medium-high heat and reduce by about half. Add stock and reduce by about half. Add demiglace. Whisk in butter, one tablespoon at a time until incorporated. Add salt and pepper to taste. Serve with steaks.