Instant Pot Paella Soup is my favourite seafood leftover soup. Loaded with leftover mixed paella and an amazing fish stock, you will want to binge on this forever.
Please make sure you read our notes in the how to freeze paella section, as it has some important points when it comes to the safety of reheating rice. If you had seafood with shells on, in your original paella, make sure you remove them before doing the paella soup.