Printable iceing

Hi

I do not know if someone can help me. I am looking at suitable icing cream for inkjet printing. In fact we are working on some DTG printer with edible ink that can print direct on cookies. But the suitable edible and printable coating is a problem for me since I do not knew anything about cake composition. Since I am computer engineer not a sheaf. I have found one recipe that says that you can use sugar in powder + some lemon juice + some milk. But this mixture is definitively not suitable for inkjet printing.

As you can see we need something like this white icing on these honey cookies. We have tried to print on them but I think the results would be better with some suitable recipe. A

So if you can suggest something different we can make that tests and we can published this results here as well for your comparison and judgment..