Hydrogen-Containing Water Product for Beverage

A method of manufacturing a hydrogen-containing water product for beverage, the method comprising:

• a filling step of filling hydrogen-containing water in a packaging container with a straw having a sealing cap attached to an opening under pressure;
• a sealing step of sealing the opening of the packaging container with a straw in which the hydrogen-containing water was filled with the sealing cap;
• and
• a heat treatment step of subjecting the filled and sealed product to a heat treatment, wherein
• the hydrogen-containing water product for beverage has a gas atmosphere that is generated in a space above the hydrogen-containing water in the container by a heat treatment conducted after the filling under pressure and is present even when at least 90 days elapse after generation, and
• the hydrogen-containing water has an oxidation-reduction potential of {[−59×(pH value of hydrogen-containing water in hydrogen-containing water product for beverage after elapse of 90 days)]−170} mV or less when being stored at normal temperature for at least 90 days after manufacture.