For sushi or a veggie stir-fry, it's easy enough to head to most grocery stores and pick up a bottle of soy sauce without glancing at the price tag. Basic ingredients like soybeans, wheat ...

But the increasing use of airtight containers to bottle soy sauce by brands has begun breaking that habit in the last 10 years or so, as they allow the condiment to be kept at room temperature.

Restaurants all over the world are brewing their own soy sauce or creating custom blends and infusions, including Sushi ...