Double knitting is not the same as DK, which, as you know, is a yarn weight. It is a piece of knitting that is double sided, so each side looks like the ‘right side’, and both sides are knitted at the same time on one pair of needles.
When you cast on for double knitting you will have twice the number of stitches on your needle and they will be treated as pairs of stitches. We have used a long tail cast on with the two colours held together. You can see that the stitches need sorting out, which you can do on the first row.
The first stitch is for the front of the fabric, which you knit, and the second stitch is for the back of the fabric, which you purl. On the first row you can untwist any stitches to make sure the colours come right.
After a couple of rows you can see how the basic fabric starts to emerge.
What is really fun is when you start to knit a pattern like we have here, and one side of your work is the mirror image of the other, although it does take a huge amount of concentration before you get the hang of it. Some patterns even have a different pattern on each side but that is definitely a brain teaser.
If you want to find out more about double knitting we recommend Double Knitting: Mastering The Two-Colour Technique by Anja Belle