Add the chopped tomato and the wine to the stockpot and turn the heat to medium high, and bring to a simmer. Insert the colander of mussels into the stockpot and cover. After 3 minutes, check to see if the mussels have opened. If some are still closed, cover the pot, and cook for an additional 30 seconds. Discard any unopened mussels.
Place the mussels in a serving bowl. Remove 10 mussels from their shells and add them to the stockpot. Using a stick blender or a bar blender, puree the mussels until the liquid is of a sauce-like consistency.