My name is Michael. I can help you with your question.
This is actually an Italian sauce called Mild Creamy Basil
Or Basil Cream Sauce
The sauce preparation begins by melting butter in a saucepan. Mushrooms, cloves and onions are sautéed in this butter and combined with basil, chiles, tomatoes, and cream and cooked until the sauce is thickened. Parmesan cheese is added towards end of cooking. Freshly cooked beef ravioli is tossed in this sauce before serving.
The "Mit" Acedo Balsamico means "with Balsamic Vinegar".
Here's a link to where you can get it online
The particular product in your picture is actually made in Vietnam - the manufacturer calls it "Seafood Sauce"
or "Chinsu Sauce"
So, while you saw it in Germany, it the name of the sauce would indicate that it's Italian, I think the closest match here in the US would be "Chinsu Sauce" which you can usually find in the market by that name or "CHIN-SU".
You can purchase this exact sauce from the manufacturer in Vietnam, Sovina Company Ltd, but you would need to clear out some space because the minimum purchase a 20 foot container :-/
I looked a little bit more and found the International distributor for the one bottled under the Kuehne name.
Thank you both for your answers. The balsamic glaze is definitely it, and I have now purchased it in the Italian food section at my local grocery store. I used the information in the first part of the first answer, and when I came back to rate, the second answer was here, and it was spot on too! It definitely isn't fish sauce though :) Thank you very much. I'm a happy camper.