All that Jazz Hat

All that Jazz Hat by Carina B.H.

What is Being Made

The All that Jazz Hat is a knitted beanie designed for children and adults, available in five graduated sizes ranging from toddlers aged 1-3 years through to large adult sizing. The hat features a distinctive picot edge detail and is constructed as a seamless, in-the-round project using circular needles. Head circumferences range from 43 cm for the smallest size to 58.5 cm for the largest, accommodating a wide range of wearers.

Techniques Used

This beginner-friendly knitting pattern employs fundamental circular knitting techniques worked in the round on 2.5mm circular needles. The construction begins with a decorative picot edge, a classic finishing technique created by casting on stitches, knitting a series of rounds, then working a yarn-over and knit-two-together decrease row that creates small eyelets. The brim is then folded inward and live stitches are picked up from the cast-on edge, joining the folded layers together seamlessly. This method produces a neat, professional-looking edge without requiring binding off and sewing.

Stitches Used

• Knit stitch (K1) – The foundational stitch used throughout the majority of the hat
• Knit two together (K2tog) – A right-leaning decrease used in the picot eyelet row
• Yarn over (YO) – Creates decorative eyelets in the picot edge row, worked in alternation with K2tog decreases

The pattern is constructed primarily from stockinette stitch (knit rounds), with the picot edge row being the primary textural variation.

Materials and Yarn Specifications

The All that Jazz Hat is designed to be worked in 4-ply yarn weight, specifically using Fjord Fibres Trollfjord sock yarn, which provides 350 meters per 100 grams. The pattern calls for 2.5mm circular needles to achieve the specified gauge of 26 stitches per 10 centimeters.

Yarn quantities are consistent across all five sizes: 50 grams of main color (MC) and 20 grams of contrast color (CC) per hat. The designer notes that yarn yardage requirements may vary when substituting alternative yarn brands for the recommended Fjord Fibres yarn.

Pattern Details

The picot edge construction begins with casting on between 112 and 156 stitches depending on size, then knitting 10-14 rounds in the main color. A yarn-over and knit-two-together row creates the characteristic eyelets, followed by additional rounds before folding and joining. The use of both main color and contrast color throughout the design adds visual interest to this beginner-appropriate project, making it an ideal introduction to colorwork and circular knitting techniques.