This recipe features tender brill fillets served with succulent mussels and buttery Jersey Royals. The brill fillets are pan-seared until golden and cooked to perfection, while the mussels add a briny and flavorful element to the dish. The Jersey Royals, a type of potato, are boiled until tender and then tossed in butter for a rich and creamy texture. This dish is a delightful combination of flavors and textures, perfect for a special dinner or a seafood lover's feast.