In case of Sansai and Sanyaso (plants growing wild in fields and mountains), preparations such as removing scum are necessary in other methods of cooking, but are hardly required for tempura, and tempura cooking is very popular when people want to taste picked Sanyaso promptly at a Sanyaso picking gathering.
山菜や野草の場合、他の調理法ではアク抜きなどの下処理が必要となるが、天ぷらにおいてはほとんど必要がなく、摘み草などで山野草を手早く味わいたい場合に多く用いられる。