I love mussels. I love them even more when I can get a frozen package of two pounds of cooked mussels in their shell for 4.62 at the Super Walmart. (If you are using fresh mussels, please read my instrustions and precautions here ) To heat the already cooked mussels: Boil a pot of water, and heat the mussels in their inner plastic bag. For the yummy, yummy sauce: Heat pot over medium heat, add 3-4 tablespoons olice oil. Chop about 8 shallots (or 1 large onion), and add them to the pot. Chop 3-4 cloves of garlic, throw them in too. Add a few tablespoons of butter, some salt, pepper and a cup of white wine. Add two tomatoes, diced, or one can of diced tomatoes. Then you need to add broth. I used the seafood broth concentrate from Penzeys mixed with more wine :) Open the mussels and add them, with the liquid in their bags, to the mix. Serve with a crusty baguette!