Three balls of yarn ,your choice.
100 chain
Count four stitches in......
Two double crochet.
Next chain loop start !
Four doubled crochet, in each stitch.
You can Twist as you go this makes the end product easuier as the twist is already done.
The hour makes the coil I then added a chain row to widen scarf the edging is extra time.
Job done
(sounding a little like Jamie Oliver "Wham Bosh bash "a wearable scarf and no hassle)