100% buckwheat soba; pure buckwheat noodles
Soba made from buckwheat flour only, without wheat flour. Often contrasted with regular soba that contains wheat. The term emphasizes purity and traditional preparation.
See also: そば
The pure buckwheat soba at this shop has a strong aroma.
Pure buckwheat soba is made using only buckwheat flour, without wheat flour.
Common mixed kanji-kana spelling.
Full kanji spelling; less common but still seen.
生 (ki, 'pure') + そば (soba, 'buckwheat noodles'). The prefix 生 here indicates purity, meaning made solely from buckwheat.