Avalon was one of our culinary highlights of Ghent - I can't understand why it's only open at lunchtimes! It was full when we visited, so I'd recommend booking a table. Despite how busy it was, service was fast and friendly and it was a nice relaxed dining experience.
The food was really fresh, and everything was colourful and well-balanced. I had bourginon seitan, and my partner had the vegetable pie - both were delicious. We also had the desserts, which weren't quite in the same league as the mains. We also got a tiny pot of chocolate mousse with our cups of tea, which earns it the full five stars!