Yarn
Knitlob’s Lair Väinämöinen (75 % wool, 25% nylon; 100 g / 400 m). 1 skein color omena

Needles
2.5 mm or to get gauge

Gauge
32 sts and 52 rnds / 10 cm in stockinette stitch

Notions
Yarn needle
Sock blockers if wanted

There seems to be a small error with the stitch count after gusset decreases; the right stitch count is as follows:
Repeat these 2 rounds until 64 sts left – 32 sts on instep and 32 sts on sole.