The Sandwich Saumon-Aneth is named for the herb, and the naming is honest: the dill is not a garnish here but a defining component. Smoked salmon on bread is a complete idea on its own, silky and salt-cured; what this version commits to is aneth, fresh dill, worked through the build until its grassy, faintly anise note is as much a part of the sandwich as the fish. The construction is thin slices of saumon fumé over buttered bread, a squeeze of lemon, black pepper, and dill carried either in the butter, in a soft cheese spread, or scattered in quantity across the salmon.
The logic is a soft cold ingredient that needs lifting and a herb chosen to lift it. Smoked salmon is rich and one-note if left alone with bread; the dill cuts through that with something green and aromatic that the fish does not otherwise contain, and unlike a hard herb it stays tender against the soft slices rather than fighting them. The butter or the herbed cheese is structural, carrying both the cure's salt and the dill's oil across the bread so the flavor is even from edge to edge rather than concentrated wherever a sprig landed. Lemon is part of the build, not a finish: the acid keeps the richness from going flat and sharpens the dill at the same time. Bread leans dark and firm, a seeded loaf or a rye, which gives the soft fish and the soft herb something with grain and bite to push against.
Neither the fish nor the herb waits well. The salmon dries at its cut edges and the dill wilts and loses its lift if it sits, so this is made close to service and eaten plainly, soon after building.
Variations move along the herb and the dairy. A crème fraîche base reads lighter and tangier than butter and holds the dill in suspension; chives alongside push it sharper; capers add a briny edge. The cream-cheese-and-bagel reading is the Bagel Saumon, a distinct sandwich. It belongs with the fish sandwiches the catalog groups under Baguette Poisson, and its specific contribution is the herb as a named element: dill threaded through the build rather than dropped on top.