Smoked Haddock Gratin

Ingredients

Smoked haddock (28%) (haddock (fish), salt, sugar), milk, potatoes (sulphites), cream (milk), Cheddar cheese (milk), spinach, crème fraîche (milk), breadcrumbs (wheat flour, water, yeast, salt), butter (milk), onions, white wine (sulphites), wheat flour (wheat flour, calcium carbonate, iron, niacin, thiamin), parsley, rapeseed oil, lemon juice, dill, fish stock (water, fish powder, salt, rapeseed oil, anchovies (fish), dried cod (fish), lemon juice, dried onions, dried potatoes), garlic purée, white pepper, salt.