noun, noun or participle which takes 'suru'
rolling freshly picked tea leaves; crushing tea
Technical term in tea production: the process of rolling and twisting freshly picked tea leaves to break cell walls and shape the leaves, often as part of the initial processing for green tea.
茶葉の揉捻は、手作業で行われることもある。
Rolling of tea leaves is sometimes done by hand.
揉捻機で
Roll the tea leaves with a rolling machine.