The panino con Kaminwurzen is an Alto Adige sandwich built around a small, hard smoked sausage cut into coins. Kaminwurzen are slim cured sausages of pork, or pork and beef, cold-smoked and air-dried until they are firm enough to snap, the name marking the chimney smoke that flavours them. They are not a soft spreadable salame and not a fresh sausage to grill: they are a dense, chewy, intensely smoky thing that is sliced thin on the diagonal and laid into bread as it is. That texture and that smoke are the whole sandwich, and the build exists to frame them rather than soften them.
The craft is the cut and a bread with enough structure to push back. Kaminwurzen are hard, so they are sliced thin and at an angle to keep each coin chewable rather than rubbery, and they are used at cool room temperature where the smoke and fat read fullest. The bread is assertive here, not a blank: a rye loaf with caraway, or the brittle Schüttelbrot cracker whose shatter is the entire counter-texture, or a dense roll, because a soft white bun would simply disappear under a smoked Alpine sausage. A thin scrape of butter sometimes bridges the dry sausage to a dry bread, and that is the extent of it. Nothing acidic or sweet is added, because the smoke is loud enough on its own and a second strong voice would only argue with it.
The variations stay in the Tyrol and turn mostly on the bread and what little sits beside it. There is the build on rye, the one on Schüttelbrot, and the version that adds a slice of mountain cheese against the smoke. The wider Germanic-north shelf of this corner, the juniper-smoked speck, the canederli and the Brezel, follows its own logic, and each of those deserves its own article rather than being crowded in here.