I usually drink water or tea, but sometimes I want to drink a refreshing carbonated drink. However, I'm usually satisfied with a bite and put it in the refrigerator ...

I completely forgot about it, and I couldn't stand the loneliness I found the next day and thought, "Oh, this was yesterday ... I wonder if I've lost carbonic acid." So I decided to use this item.

The "Carbonated Nagamochi Cap for Carbonated PET Bottles" sold by Kai is a cap that can be used in place of a PET bottle cap to prolong the "squishy feeling" of carbonic acid. It seems that it can be used for both 500ml (16.91us fl oz) and 1.5L bottles.


First of all, I will try it with the representative (?) Coke of carbonic acid that makes me want to drink.


The carbonated rice cake cap is divided into two parts, so first attach the fixing cap to the bottle and then insert the pump parts from above. Move the pump up and down to send air, and stop when the bottle becomes a little hard. Save it upright.




After one day (24 hours), when you remove the cap, you will hear a nice "push" sound. When I pour it into a glass, the carbonic acid bursts! It's the same cola as when I first drank it.


Pump again to pump air and leave for a while. When I drank it 48 hours after opening the cap, the bubbling and throatiness were still present, but it was weaker than at the beginning, and I began to feel the sweetness peculiar to carbonic acid. It seems good to drink this much.


Another thing I was interested in was the beverage with the word "slightly carbonated". This delicate throat disappears as soon as you open it.


I also changed to a carbonated rice cake cap, and after 24 hours, I enjoyed the same taste and exhilaration as when I opened it. I inadvertently drank it at this point and have not verified it after that.

It should be noted that the freshness of carbonic acid after one day is almost the same as the first in both cases. There seems to be more room for verification, such as the case of a 1.5L bottle and the time it takes for the carbonated water to completely disappear, but for the time being, with this, you can enjoy carbonated drinks more than ever! The manufacturer price is 464 yen (tax included).