Make the smoked trout dip: Flake trout and set aside. In a large bowl, combine remaining ingredients. Fold trout into mixture until well incorporated—do not overwork. Taste and adjust seasoning with salt as needed (the trout is brined before smoking, so don’t add salt until you’ve mixed [...]
Place sweet potato with heavy cream in a large pot set over medium-high heat and simmer until potatoes are tender. Once tender, drain potatoes from liquid (reserving some) and place in standing mixer. Mix until a smooth purée, adding back liquid as needed.