The baguette was fresh from the boulangerie that morning, a perfect fusion of airy lightness and crackled crust. The cheese – a nutty, golden gruyère – we’d bought from Pierre: we hadn’t expected to hike past a human, let alone a fromagerie, in the teeny hillside hamlet of Rouet, and it had taken a while to rouse the cheesemaker from within his thick farmhouse walls. But thankfully we’d persevered. Because now we were resting in a valley of pine and pasture with the finest sandwich we’d ever eaten. Just two ingredients. Three, if you counted the mountain air.