3 gratin emmental Recipes

leeks (about 1 1/2 lb; white and pale-green parts only), trimmed, halved lengthwise, washed, and cut crosswise into 2-inch pieces, kosher salt, russet (baking) potatoes (about 3 lb), peeled, imported swiss cheese , such as gruyere or emmental, shredded (1 1/2 cups packed), water-packed artichoke hearts, drained and sliced, freshly ground black pepper, half-and-half, parmesan cheese, finely grated

whole chicken (jointed, about 2 to 3 kilos in wieght), cognac (1/3 glass), dry white wine (1 1/2 glasses), smoked paprika, creme fraiche, grated cheddar cheese (or any other hard cheese such as ( emmental, comte, cantal or tomme de savioe), dijon mustard, breadcrumbs, vegetables or 2 tbsp peanut oil, caster sugar, flour, salt & pepper