More tulips than Holland

This flower symbol on my hotel room door is repeated on countless rugs, draperies, porcelain and paintings in Istanbul. One day we had lunch at "The Pudding Shop" (Yes, of course, I had to eat in a place and it did not disappoint -- rice pudding that was like ice cream!) and the waiters all had shirts that read: "The Pudding Shop. Lale Restaurant." What's a lale? See photo.