The quintessential Swiss mountain inn salad: peeled Cervelat sausage and aged Emmentaler cheese sliced into fine matchsticks, tossed with red onions and gherkins in a sharp vinaigrette.
Peel the outer casing from the Cervelat sausages. Slice the sausages and Emmentaler cheese into matching 5mm thick matchsticks (julienne).
Place the sausage and cheese into a mixing bowl along with the sliced red onions and cornichons.
Whisk together the vinegar, sunflower oil, mustard, water, salt, and black pepper until emulsified.
Pour the vinaigrette over the salad, toss thoroughly, and let rest for 10 minutes. Scatter with fresh chives and serve with crusty bread.