Baccalà Mantecato: Venice's Whipped Salt Cod Emulsion

24–48 hours ahead, submerge the salt cod in a large bowl of cold water and refrigerate. Change the water every 12 hours (minimum 3 changes). Taste a raw sliver before proceeding — it should be pleasantly salty, not sharp. If it's still aggressive, soak for another 12 hours.

Place the desalted cod in a saucepan in a single layer and cover with cold water. Bring to a gentle simmer over medium heat and poach for 15–20 minutes until the fish flakes easily when pressed. Do not let it boil hard — it toughens the flesh. Reserve 120 ml of the poaching liquid, then drain the fish.

Once cool enough to handle, peel away the skin and remove all bones. Flake the fish as fine as possible with your fingers.

Wrap the flaked fish in a clean kitchen cloth and squeeze gently to remove excess moisture. You want it moist but not wet — similar in feel to slightly damp ricotta. This balance is critical: too wet and the emulsion won't hold, too dry and it won't form.

Transfer the fish to a large bowl (or stand mixer bowl fitted with the paddle attachment). Add the softened butter and work together vigorously until a rough paste forms.

Begin adding the olive oil in tiny amounts — a teaspoon at a time — whisking constantly between each addition. Do not rush. The mixture should look glossy and absorbed before you add the next drizzle, exactly as you would build aioli.

Once roughly half the oil is incorporated and you have a thick, ivory emulsion, begin alternating: a teaspoon of oil, then a splash of warm poaching liquid or white wine. Continue until all the oil is absorbed and the mixture is fluffy and holds soft peaks.

Add the lemon juice 1 tbsp at a time, whisking it in. Taste after each addition. Season with white pepper. Taste carefully before adding any fleur de sel — the cod may already be well-seasoned.

Check the texture: it should be ivory-white, cloud-light, and thick enough to mound on a spoon. Too thick — whisk in a splash more poaching liquid. Too loose — refrigerate for 15 minutes, which will firm up the emulsion.

Spread generously on grilled crostini or warm polenta slices. Scatter over the chopped parsley or chives and serve immediately with white wine.