Kohaku Japanese sweets

Amber is made from the resin of an ancient tree, and after many years of frost, it came to be called a gemstone.
It is said that in comparison to this gemstone, confections made by boiling down and hardening agar and sugar came to be called Kohaku, Kohaku-ka, Kohaku-to, etc. due to their beauty.
It is a Japanese sweet that is visually appealing and has a delicious crunchy texture on the outside and a soft interior.