This article highlights an intriguing exploration of cultural perception in Japan, as it discusses the simple yet significant question - 'What color is soy sauce?' The issue seems mundane, but it aims to reveal the unconscious assumptions deeply rooted among the Japanese population. The goal is to address the societal bias that may be present within the perceived structure of such basic, everyday matters such as food and color perception.

In Japan, like many other societies, there exists an inherent categorical impression of certain objects, including food, and its color. For example, soy sauce is, by cultural consensus, associated with a specific color. These discussions open up dialogue about how the Japanese perceive and categorize their everyday surroundings, highlighting rigidity or flexibility in their perceptions.

In the US or EU, similar issues are often tied to cultural studies, and psychological research, just like in Japan. They involve exploring deeply rooted cultural assumptions and unconscious biases. The context, however, can vary - from food to sports or societal norms, based on each society's peculiarity.