자연스러운해석좀도와주세요 ㅜㅜㅜ

it was considered rude to taste something from a spoon if it was being passed down to another diner.
이 부분이 자연스럽게 해석이 잘 안되네요 ㅜㅜㅜ 도와주세요 ㅜㅜㅜㅜ