The ice is just like grapes, so pretty
And it's amazing how the color changes when you drop lemon juice!
Cool and delicious....
The principle of turning purple-
Butterfly P tea is a caffeine-free herbal tea. When the petals are placed in water, the anthocyanin component of the flower dissolves and turns into a clear, transparent blue color.
Anthocyanins react according to the pH concentration and you can see the color change to purple when acidic lemon juice is dropped - Naver Encyclopedia -
