Nagashi somen (flowing noodles, somen nagashi): Flow somen through a bamboo toi (a generic term for a gutter), catch it with chopsticks, and dip it in mentsuyu to eat.
流し素麺（そうめん流し）：竹製の樋(建築)を使って素麺を流し、箸で捕まえてめんつゆ等に付けて食べる。