Domino was open until mid October this year and as long as it is warm enough, the icecream is well worth the trip.
The current bestseller, at least with the younger clientele, seems to be a variety called "cookies" – which is why it is often sold out. Smurf-blue icecream on the other hand can always be had instead, although I doubt that it is really meant for consumption. It is probably just displayed to shock parents.
If you order a milkshake, take your time. It comes so thick, with much more ice cream than milk, that it is impossible to slurp it with a straw, at least in the beginning (and that’s a good thing!).

From Brandau to Nieder-Modau this is the best icecream parlour; it is also the only one.