Why are Piña Colada slurpees not kosher?

Question

Whats done to them that makes them not kosher?

Answer 1

If they're made with dairy products, you can't mix them with meat dishes.  That would make them unkosher.  Otherwise, I have no idea.

Answer 2

becos it contains shellfish pork flavur

Answer 3

Just guessing, without the list of ingredients:

Possibly contains non-kosher gelatin.

Possibly contains a food coloring or other additive that isn't kosher (I know some red food coloring is made out of insects, which are never kosher).