Meaning of そば粉(そばこ) in Japanese

Examples of そば粉, 蕎麦粉, そばこ in a sentence

• そばはそば粉から、うどんやきしめんは普通の小麦粉からできてるの。

  Soba is made of buckwheat flour, and udon and kishimen are made of plain wheat flour.