More about the Merry Q-mas sign
https://en.wikipedia.org/wiki/Quick_(restaurant)
Quick Burger is a chain and they still have a restaurant near the Hotel Billard Palace, but the one shown in the Google Streetview was from 2009. Not sure of Q's image date. Another Belgian company posted this two years ago
https://www.instarix.org/media/1413089218338773417
Merry Q-mas seems to be somehow trendy over there.
Back to Quick Burger. They do have a Vegetarian choice but they use Qorn in it. Qorn is well-known to British folks who see it in the freezer section every time they visit a supermarket. It has been around for decades.
Beyond Burger a.k.a Impossible Burger, is sold in Belgium by another burger place, Ellis Gourmet Burgers. I suggest digging into this product which has been contaminated with pesticide due to use of animal feed which the farmers thought would only ever be used mixed in with grain. It also uses coconut oil which over time has negative effects on brain function due to malnutrition. In Polynesia people eat lots of fish, bird meat and pig meat so this is only a bad thing for vegetarians. In other words Beyond Burger is designed to slowly poison consumers. This would certainly put people in the hospital, wouldn't it?