It has been really cold and damp the last couple of days here, so a seriously warm hat has been called for. If we didn’t need the samples for shows, I would have been wearing one of our Peaks and Troughs Hats all week, whenever I’ve been outdoors. Why? Well, if one layer of knitted fabric will keep my head warm, two must be even better.

Double-knitting may take a little getting used to, but once you have the hang of it you’ll be away, working the reversible fabric as you go. It’s very moreish! We’ve several videos to get you going. Firstly, this is a useful cast-on method, since it sets up alternating knits and purls in alternating colours (it’s also great for corrugated ribbing):

Once you’re set up, this is the basic technique you need for double-knitting:

If you’re making the Peaks and Troughs Hat, you’ll need to know how to decrease:

Finally, a bonus to show you how Jen holds her yarns (both in her right hand) when double-knitting:

Whatever you are making with double-knitting, please do share your progress in the Ravelry KAL thread. And if you’d like to give your knitting skills a Boost, you can purchase the complete Boost Your Knitting programme in our online shop (£22 plus shipping), along with the yarn for this hat (you’ll need a skein in each of three colours) as well as seasonal kits (each containing yarn for 3 months of projects).