Mustardy Salmon in a Packet with Asparagus Recipe

Ingredients (7)

• 4 tablespoons crème fraîche
• 4 tablespoons dry white wine
• 2 tablespoons Dijon mustard
• 2 tablespoons whole grain mustard
• 2 bunches (32 stems) asparagus, trimmed and cut in thirds
• Kosher salt and freshly ground black pepper
• 4 boneless skinless salmon filets (about 6 ounces each)