
2 tablespoons chopped fresh chives, plus additional for garnish
2 tablespoons salted butter
3 tablespoons all-purpose flour
⅛ teaspoon ground cayenne pepper
¾ cup half-and-half
¼ cup dry white wine
1 (4.5-ounce) package soft-ripened Brie cheese, cut into small pieces
8 ounces fresh lump and/or white crabmeat, chopped
1 (17.3-ounce) package frozen puff pastry sheets (2 sheets), thawed