Vines are a really nice decorative organic block, they can make your builds look abandoned, or very organic, they give more life to some trees, etc.
Though, they always grow, and they continue, continue, continue, and never stop. That's not good right? What do you mean the solution is to use string? No, let's burn it instead!
And here it is, the burnt vine.
Burnt vine is only a block, it doesn't have an associated item form, to obtain it you will need to use flint and steel on a normal vine!