Here's what makes it special:
* Flavor: It's described as tasting like "strawberry and lemonade, but much more fizzier and much more fruity".
* Fizziness: The drink is extremely fizzy, so much so that it makes a "gurgling noise" when you drink it.
* Appearance: It's a "pinkish-purple" color.
* Magical Effects: The frobscottle is said to make you feel "light and happy" and gives you "fizzy bubbles" in your tummy.
The frobscottle is a beloved part of the story, representing the BFG's gentle and whimsical nature. It's also a great example of Dahl's creative use of language and his ability to make even the most ordinary things seem fantastical.