I love Moules/Mussels, plus they are low in fat and high in minerals, making them very healthy! This is my own version of the Traditional French Moules Mariniere. The vermouth adds a complex and sweet taste to these mussels, and the tarragon compliments the vermouth perfectly. These mussels really are fragrant - the whole kitchen is perfumed with the sweet and aromatic smell whilst they are steaming! Serve with good bread and frites (French fries) for a delicious main meal or luncheon dish.