Soy sauce is a dark, rich and flavorful liquid condiment that is commonly used in Asian cuisine. It's originated from China and has been used in cooking for over a thousand years. It is made from a fermented paste of soybeans, roasted grain, brine, and a mold called Aspergillus. The concoction is then aged in wooden casks for several months, giving it a distinct savory or umami flavor that is both slightly sweet and salty at the same time.

The consistency of soy sauce is similar to that of thin syrup, and its color can vary from light to dark brown. There are different types of soy sauce available including light, dark, sweet and reduced-salt, each offering a unique twist to the standard flavor. It can be used in a variety of dishes, from marinades and stir-fries to dipping sauces. It's a versatile condiment that gives depth and complexity to a wide variety of dishes. Please note that due to its high sodium content, it should be used sparingly.

Soy sauce can typically be found in the international or Asian food aisle of a grocery store. It may also be located in the condiments section. If you have trouble finding it, you can always ask a store employee for help.