Domestic cooking will gradually become more simplified and diversified by using soy sauce. For example, households used to use soy sauce when making boiled dishes, but nowadays those that use soups and special seasoning are on the rise.

Be that as it may, the most common container of soy sauce is the 1L pack. When we researched how many days it took to use up a 1L pack of soy sauce, we found that it took more than one month, but that exceeded the recommended period of use of within one month that was set by the Soy Sauce Information Center.

Of course, you can still use the soy sauce after a month, but the quality of the fragrance and taste diminishes. The reality is that most people know that the fragrance and the taste changes from the first use to the last and that they prefer the taste of when they first use it, but most can’t seem to use it all within one month.

So, they wish to preserve the the quality, even just a little, by keeping it in the refrigerator, but other goods such as ingredients and dressings take up most of the space there and they end up keeping it in a cabinet or under the sink, which are all places which remain at room temperature.