Materials:
About 50 grams of a sport to worsted weight yarn
a 5mm crochet hook
a darning needle to sew in the ends

Gauge: Approximately 3 sts per inch, but it doesn't matter too much

Instructions:

Make magic ring (you can find a good tutorial here). Ch 3 (counts as 1st dc).

Rnd 1: Dc 11 sts into ring, sl st into 3rd chain. Pull ring tight. (12 sts)
Rnd 2: Ch 3, dc into sl st, * 2 dc in next st, rep from *, sl st into 3rd chain. (24 sts)
Rnd 3: Ch 3, dc into sl st, * 1 dc in next st, 2 dc in next st, rep from *, sl st into 3rd chain. (36 sts)
Rnd 4-10ish: Ch 3, dc around, sl st into 3rd chain. (until it extends to the beginning of the neck of the wine bottle)
Rnd 11: Ch 3, * dec 2 sts, 1 dc in next st, rep from *, sl st into 3rd chain. (24 sts)
Rnd 12: Ch 3, dc around, sl st into 3rd chain.
Rnd 13: Ch 4, * sk 1 st, 1 dc in next st, ch 1, rep from *, sl st into 3rd chain. This creates eyelets to pass the drawstring through.
Rnd 14: Ch 3, * dc into ch, dc into next dc, rep from *, sl st into 3rd chain.

Fasten off.

With a 12” piece of yarn, twist and fold in half so it twists up on itself, and tie knots at each end. Then draw through the eyelets. You can also use a crochet chain or an i-cord if you want.

You can do this in red, green, and white stripes for a very festive wine cozy, and it adds a nice personal touch to that bottle of wine you bring to a Christmas party. Enjoy!