It would be even more correct to call it seafood soup. But I named it as it is written in the recipe. Italians, as a rule, eat all kinds of pasta as first courses. However, soup on their table is also not uncommon. Usually for dinner. Like I have today.
Mashed potato soup is prepared simply and quickly. It can be supplemented with croutons, mushrooms, shrimp, chicken. I suggest cooking mashed potato soup with pickled salmon on skewers.