1. Place roasted chicken stock in a small saucepan over med-high heat; bring to a boil. Cook until reduced to 1/2 cup (about 20 mins). Place stock in a bowl; keep warm.
2. Combine wine and next 3 ingredients (through thyme) in pan over med-high heat; bring to a boil. Cook until reduced to 1/3 cup (about 8 mins). Stir in reserved stock; return mixture to a boil. Cook until reduced to 2/3 cup (about 7 mins). Strain mixture through a sieve over a bowl; discard solids. Stir in butter, 1 tsp at a time, stirring until butter melts. Stir in salt and pepper.
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