"Ice Cube" found at the 100-yen shop "Daiso". It is an item that can be used to freeze in the freezer and cool drinks instead of ice. The price is 110 yen (tax included) for 10 pieces. I bought a cool clear blue.
Easy to use. Rinse it thoroughly, wipe off any water, and then cool it in the freezer for several hours to harden it. When the liquid inside freezes firmly, you are ready to go. Just pop it into your drink and you can use it instead of ice! The nice point is that the drink does not dilute over time. It also looks cute and can be used not only in a glass or tumbler, but also with somen or fruit punch.
It is not heat resistant and cannot be placed in hot drinks or boiled and disinfected. Also, even if the water inside melts, you can use it repeatedly if you freeze it again, but when using it, soak a sponge in dish detergent, wash it well, and wipe off the water before using it.
A 100-yen "ice cube" that cools drinks while preventing the taste from diminishing. It seems to be useful if you have one bag. Why don't you pick up the color and design you care about?