Finished Sizes
To fit standard Brown Betty-style teapots: 4-cup (6-cup).
Yarn information given for 4-cup size; 6-cup size in parentheses ( ).

Yarn
1(2) skein(s) Rowan Felted Tweed (191 yds/175m each); yarn held double throughout. Or approx. 191(230) yds/175(210)m of an equivalent dk-weight yarn held double. Or approx. 100(115) yds/91(105)m of a heavy worsted yarn (16 sts = 4"/10cm) held single.

Needles & Notions
US 7 (4.5mm) needles (any format), or size to obtain a stretchy but lofty ribbing.
US 7 (4.5mm) double-point needles (2 only, for I-cord top; optional)
Cable needle.

Gauge
Approx. 24 sts = 4"/10cm over K2/P2 ribbing (not stretched), yarn held double.