Step 1

RIGHT MITT WRIST CO 37 (43) sts. Place marker (pm) and join for working in the round, being careful not to twist sts. Work in garter st (purl 1 rnd, knit 1 rnd) for 5 rnds. Change to St st and work 4 rnds even. Set-up rnd: Work Yorkshire Cable chart over 17 sts, pm, knit to end. Cont as established, work Rnds 1−6 of chart 6 (7) times.
Step 2
THUMB GUSSET Rnd 1: Work in patt to m, sl m, k1, pm for gusset, k1f&b (see Techniques), k1, k1f&b, pm for gusset, knit to end—39 (45) sts; 5 sts between gusset m. Rnds 2−3: Work even. Rnd 4: Work to gusset m, sl m, k1f&b, knit to 1 st before next m, k1f&b, sl m, knit to end—2 sts inc’d between gusset m. Rep Rnds 2−4 four (five) more times—49 (57) sts; 15 (17) sts between gusset m. Work 2 rnds even. Next rnd: Work in patt to gusset m, remove m, place next 15 (17) sts on waste yarn for thumb, remove m, use the backward loop method to CO 3 sts, knit to end—37 (43) sts rem.
Step 3
HAND Work even until you have completed a total of 11 (13) reps of chart, ending with Rnd 6. Beg with a purl rnd, work in garter st for 5 rnds. Loosely BO all sts.
Step 4
THUMB Place 15 (17) held sts on needle. Join yarn, pick up and knit 3 sts from CO edge, pm and join to work in the round—18 (20) sts. Knit 6 rnds. Beg with a purl rnd, work in garter st for 5 rnds. Loosely BO all sts.
Step 5
LEFT MITT WRIST Work as for right mitt.
Step 6
THUMB GUSSET Rnd 1: Work in patt to last 4 sts, pm for gusset, k1f&b, k1, k1f&b, pm for gusset, k1—39 (45) sts; 5 sts between gusset m. Complete as for right mitt.
Step 7
FINISHING Weave in ends. Block.
Step 8

This pattern is excerpted with permission from <a href="http://bit.ly/YA1MeV">"3 Skeins or Less: Fresh Knitted Accessories"</a> by Tanis Gray (Interweave/F+W; $24.99).