You can do it in any multiples of 5 stitches. I cast on 40 stitches and used about 160g of the ball and I ended up with a really chunky and long scarf – c. 35cm wide and about 250cm long!
I used 8mm needles.
The pattern is:
Row 1: Knit 3, Purl 2 … repeat across the row
Row 2: [Slip 1, Knit 2, Psso, Purl 1, yarn in front, Purl 1]…repeat across the row
Row 3: Knit 2, Purl 3… repeat across the row
Row 4: [Knit 1, yarn in front, Knit 1, Slip 1, Purl 2,Psso]…repeat across the row.
Just keep going in these four rows til you’re happy with how long it is. Then cast off in pattern on a Row 1.
In fairness you can only really see the lacey pattern when I show it off beside the light – so expect to see a lot of me standing by the window draping it there for all to admire!
Anyway, job done – and for once I’ve bucked the trend of finishing these things just as the weather goes the other way so this one has even had its first sprinkling of snow on my stomp into work on Monday morning!