Berroco Mercier Jumper Knitting Pattern

Berroco Mercier Knit Sweater

What is Being Made

The Mercier is a classic knit sweater designed by Amy Christoffers, suitable for intermediate-level knitters. This garment is available in eight sizes ranging from 37½" to 65½" bust circumference, with finished lengths between 23" and 25" depending on size. The sweater features a structured fit with recommended positive ease of 2–4 inches, making it versatile for various body types and layering preferences.

Knitting Techniques Used

The Mercier sweater employs several fundamental knitting construction methods to create a well-fitted garment. The sweater is worked flat on straight needles for the main body pieces, then seamed together for a polished finish. The design also incorporates working in the round using double-pointed needles for smaller circumferences, particularly for ribbed edgings and fitted areas. The garment is constructed using a bottom-up approach, meaning knitters begin at the lower edge and work upward toward the neckline, allowing for easy length adjustments during the knitting process.

Stitches and Stitch Patterns

The Mercier features two primary stitch patterns that work together to create visual interest and structure. The ribbed edgings use alternating knit and purl stitches (k1, p1 ribbing) to create elastic, fitted edges that frame the garment. These ribbed sections are worked for 2 inches at the lower edge and continue around cuffs and neckline areas. The main body of the sweater is worked in stockinette stitch (St st), the fundamental knit stitch pattern created by alternating knit rows on the right side with purl rows on the wrong side. This creates a smooth, classic fabric with excellent drape and versatility.

Materials: Yarn and Needles

The Mercier is designed to be knitted with Berroco Mochi, a premium yarn available in 50-gram balls. The pattern calls for the colorway #3225 Black Sesame, a sophisticated dark neutral shade. Yardage requirements vary by size, ranging from 5 balls for the smallest size (37½") to 9 balls for the largest size (65½").

Knitters will need two sets of needles to complete this project. Size 7 / 4.5 mm needles are used for the ribbed edgings, while size 8 / 5 mm needles are used for the main stockinette stitch body. Both sizes are required in straight needles for working flat, and double-pointed needles in both sizes are needed for working small circumferences in the round. The pattern specifies that knitters should select needle sizes to obtain the correct gauge.

Gauge and Construction Details

Achieving the correct gauge is essential for this pattern. The Mercier is designed to a gauge of 16 stitches and 24 rows equals 4 inches (10 cm) in stockinette stitch on the larger (size 8 / 5 mm) needles. Taking time to knit and measure a gauge swatch before beginning ensures accurate finished measurements and proper fit.

Additional notions required for completion include 2 stitch holders for holding stitches during construction, 2 stitch markers for tracking pattern repeats, and waste yarn for temporarily holding stitches. The sweater is finished with eight 5/8" (16 mm) buttons, indicating a button-front closure design that adds both functionality and visual appeal to the garment.

Skill Level and Pattern Structure

Designed for intermediate-level knitters, the Mercier requires competency with basic knitting techniques including casting on, ribbing, stockinette stitch, increasing and decreasing for shaping, and seaming. The pattern uses clear row-by-row instructions and includes stitch markers to help knitters track pattern sections and maintain consistency throughout the project.