Blend Silver Palate Sweet & Rough Mustard, lime juice and tarragon in a small saucepan. Gently heat the glaze. Heat a nonstick skillet large enough to hold fillets over medium-high heat until hot. Place salmon, skin side down, in pan and cook for 3 to 4 minutes, until lightly colored. With a spatula, turn fillets, brush with glaze and continue cooking until just cooked through, 5 to 8 minutes depending on thickness. Serve at once.