Waffle knitting stitch
Two rib rows alternating with smooth rows make a small raised waffle grid.
Counted practice swatch
Cast on 22: a multiple of 3 plus 1.
Work the repeat
Row 1: [k1, p2] 7 times, k1. Row 2: p1, [k2, p1] 7 times. Row 3: knit 22. Row 4: purl 22. Repeat four rows.
Read the fabric
The smooth rows separate the waffle cells. Keep a four-row tally; replacing row 3 with ribbing changes the pattern into an ordinary rib.