Is soy sauce a homogenous or heterogeneous mixture?

* Homogeneous mixtures have a uniform composition throughout. You can't see individual components, and any sample you take will have the same properties.

* Heterogeneous mixtures have components that are not evenly distributed. You can often see individual components, and different samples might have different properties.

Soy sauce appears to be a single, uniform liquid. While it's made from multiple ingredients (soybeans, wheat, salt, etc.), these components are dissolved and distributed evenly throughout the sauce. You can't see individual ingredients, and any drop of soy sauce will taste the same.