Situated in a converted greenhouse in Frankendael Park, De Kas is adjacent to a nursery and garden where much of its ingredients are grown. The elegant dining room has views of the open-plan kitchen, and is sheltered by a high, glass-pane ceiling. There is seating available in a number of private rooms and outdoor dining in the herb garden or patio. The fixed-price lunch and dinner menu is rural Mediterranean in approach, centered on fresh produce, and changes daily. A higher-priced menu is available to parties of up to four who wish to sit at chef-owner Gert Jan Hageman's table in the kitchen.