Cabin fever used to mean going slightly mad indoors. Now it describes a very specific longing: warm timber walls, wool underfoot, a lamp in every corner and nowhere to be. It comes round every winter. This year it has settled on a material, and the material is Douglas fir.

You’ll know it when you see it. Straight, tight grain. A pinkish-orange tone when new that mellows to honey and then amber with age. It’s the wood of Alpine chalets, Pacific Northwest A-frames and Danish floorboards people photograph before they’ve finished unpacking. After a decade of pale oak, it feels almost decadent.

It’s going on walls, ceilings, kitchen fronts and floors, usually all at once. Used sparingly, it can look like an afterthought. Used generously, it looks like you’ve moved somewhere with better air.