NB this post was begun not long after a pre-pandemic trip to Amsterdam. I have sadly since lost my notes but found this draft and thought you should 100% know about the amazing De Kas in spite of missing info! Also, I couldn't seem to align the photos. It's been a rough moment! But worth it...A few tram stops from the center of Amsterdam, Restaurant De Kas is located inside a park, Park Frankendael. The greenhouse building is hard to miss with its walls of windows reaching skyward from its verdant surroundings. And inside the restaurant, you are transported away from the bustling city by course after course of delicious food with perfect wine pairings. I described the meal to a colleague as "obviously painstakingly imagined and prepared, but the flavors are fresh and effortless."
Their motto is "from plant to plate," and if you take a stroll around the greenhouse and grounds, you will understand why the food is so simple and fresh... it traveled mere meters to arrive at your table. They grow around 300 different vegetables, herbs, and fruits in their gardens, harvest at the perfect time, and prepare each element quickly. 
Abiding by this philosophy, the menu changes almost daily, depending on the season. The fixed menu is vegetable-forward, and can be made fully vegetarian and vegan.
I went for lunch, all the better to appreciate the airy lightness of the windowed dining area, and the courses were plentiful (as you see,) but I was not overly stuffed after the meal.
You may choose a three- or four-course lunch menu (your gal did the four, of course!) and a five- or six-course dinner menu. They are quite reasonably priced for the quality, at 45 & 54 Euro for lunch, and 68 & 76 Euro for dinner.)
For beverages, their wines, beers, ciders, and juices are from sustainably-minded producers, and many are collaborations with their own products. 
They have earned one Michelin star, and also possess a green star which is awarded to restaurants for impressive sustainability practices.
So, while this post is woefully out of date and perhaps a bit anemic, the vibrance and deliciousness of Restaurant De Kas remains. Next time you're in Amsterdam, put De Kas at the top of your list!
⭐️ 5: OB. SESSED.
📪 Kamerlingh Onneslaan 3 1097 DE Amsterdam
📞 +31204624562
✉️ info@restaurantdekas.nl
restaurantdekas.com
@restaurantdekas
