Seared Sea Scallops in Mandarin Sauce with whites

1 lb dry large scallop (rinse under cold water and pat dry with paper towels) 3 tablespoons unsalted butter , cut into 6 pieces 2 tablespoons finely diced[...]

2 teaspoons canola oil 1 onion , chopped 6 stalks lemongrass , dry leaves removed, stems pounded, cut into 3-inch lengths 4 garlic cloves , finely chopped 3[...]

1 lb large scallop 3 tablespoons butter , divided 1 tablespoon olive oil 3 tablespoons flour 3 cups milk 5 ounces blue cheese 1 teaspoon salt 1 pinch nutmeg[...]