Rav Simcha Kook (of Rechovos/Rechovot) tells that his son asked permission to do hataras neder so that he could eat gebroks at his father’s-in-law house. Rav Kook told him he doesn’t need reshus and he doesn’t need hatars nederim. His father said that his minhag is and was to eat gebroks.
His wife’s minhag is to refrain from gebroks. He explained that his wife runs the kitchen and cooks like she was taught. Of course the Rav continued, I eat what the wife prepares.