Mustard Maple Roasted Salmon from Waterfall Resort Alaska

Ingredients

• 1 Tbsp. extra virgin olive oil
• 1 large shallot, chopped
• 1/4 cup Banyuls or white wine vinegar
• 1/4 cup whole grain mustard
• 1/8 cup packed brown sugar
• 1/8 cup pure maple syrup
• Coarse salt and ground pepper
• 1 salmon fillet (about 3 lbs.), skinned, pin-boned, cut into 8 portions
• 1 bunch watercress (about 3/4 pound), thick stems trimmed
• 1 lemon, cut into wedges, for serving