Sunomono (酢の物) is a Japanese salad made with really simple ingredients: rice vinegar and soy sauce. Based on the ratio between rice vinegar and soy sauce, you can tweak the recipe to make either a nibaizu (二倍ず) or sanbaizu (三杯酢). Nibaizu uses 3:2 ratio of rice vinegar and soy sauce, while sanbaizu uses 3:1 ratio