Step 1

In the bowl of a food processor or stand mixer, combine all of the ingredients until smooth. Transfer the bowl to the freezer for 10 minutes before proceeding.

Step 2

Remove the bowl of meat from the freezer and divide the mixture in half. Using damp hands, form each half into a log. Compress it tightly as you work. Wrap each log in plastic wrap and use twist-ties to secure the ends tightly. Refrigerate flat for 24 hours.

Step 3

Preheat oven to 300° F / 150° C / gas mark 2.

Step 4

Remove plastic wrap from meat and carefully transfer both logs to a baking rack propped over a rimmed baking sheet. Bake for 30 minutes, turning halfway through.

Step 5

Reduce heat to 250° F / 125° C / gas mark 1 and cook an additional 2 to 2½ hours to an internal temperature of 160° F. Remove from oven and allow to cool  completely. Refrigerate up to 3 days. May be frozen for longer storage.