godan verb (-mu), transitive verb
knead into; mix in by kneading
Used when working a substance (dough, clay, etc.) to incorporate another ingredient or material evenly.
パン生地にレーズンを練り込む。
Knead raisins into the bread dough.
粘土に色粉を練り込んで、均一な色に
Knead colored powder into the clay to make a uniform color.