This is the 10129th most frequent Japanese word.
酢の物
A Japanese dish consisting of vegetables, seafood, or seaweed dressed in a vinegar-based sauce.
In this sentence, "酢の物" is used to refer to the dish itself categorically as a healthy food option.
酢の物は、健康的な副菜の一つです。
Sunomono is one of the healthy side dishes.
Here, "酢の物" is used to describe the traditional preparation of the dish, emphasizing its ingredients and method.
酢の物を作るには、酢と砂糖を混ぜるのが基本です。
To make sunomono, mixing vinegar and sugar is essential.
"酢の物" is used to highlight its palate-cleansing properties, especially as part of a meal.