noun
salt rubbing; sprinkling salt and rolling on a cutting board
A cooking technique where salt is rubbed into a vegetable and it is rolled on a cutting board to soften it and remove bitterness.
きゅうりを板ずりしてから、浅漬けにします。
After salt-rubbing the cucumber, I make lightly pickled vegetables.
板ずりをすると、野菜の苦みが和らぎます。
Salt rubbing mellows the bitterness of vegetables.
塩もみ is a similar technique of rubbing salt into vegetables, but it does not necessarily involve rolling on a board; 板ずり specifically includes the board-rolling step.
Compound of 板 (ita, 'board') and ずり (zuri, the rendaku form of すり 'rubbing'). The technique involves rubbing the vegetable on a cutting board.