Here is the recipe for the demi-glace:

1.5 liter of port
2 cups brandy
Reduce
2 cups white raisins
1 cup black raisins
4 oz green peppercorns (drain juice)
add demi-glace (I bought the prepared kind at Central Market), add by spoonful until you get the right consistency
reduce to sauce consistency
reduce
red wine vinegar and honey to taste

Enjoy!

Lorraine