Tarragon Vinaigrette

1 tbsp. tarragon, chopped
pepper, to taste
1/2 tsp. garlic, pared, minced
1/2 tsp. mustard seed, crushed
1/2 oz. anise-flavored liqueur
1 oz. tarragon-infused champagne
3 oz. vinegar
8 oz. oil

Combine all ingredients except oil; mix well. Gradually whisk in oil.