The answer is “ramune”, or soda pop.

But its bottle is different from that of foreign countries.

A marble is used to cap a bottle.

In the past, the cap was made of cork.

But this way was a troublesome job as they had to prevent a leak by drying it and to keep cork from jumping out by a change in gas pressure.

So, an easier way was invented in 1843 in UK.

It was a marble!

This idea was also popularized in Japan.

But about fifty years later, another new idea, a crown cap was invented in America.

From then on, marble caps went out of use all over the world.

However, Japan didn’t have enough money to introduce this new idea.

It couldn’t keep up with the times.

So, they kept on using a marble cap and it has become a traditional item.

It is difficult to open this marble cap.

You have to push it down hard, but please be careful.

If you push it too hard, soda pop may blast out of a bottle!

If you want to keep a marble after you finish drinking, break the bottle, and you can take it out.

Now, this “ramune” is popular among people of all ages.

For children, this is accepted as a new sensational drink.

For adults, this brings back memories when they were little children.