I had this at Hidden Peak Teahouse.
First Steep: The smell reminded me a little of houjicha. It was very vegetal and tasted of artichokes. very smooth.
Second Steep: The oolong really opened up and filled the steeping cup. There was a strong smell of artichoke. There was still vegetal/artichoke flavor, with a slight hint of floral flavor and roasted toastiness. The flavors came together in a nice balance.
Third Steep: There was a lighter flavor like black tea mixed with green tea, with a vegetal note at the end.
Fourth Steep: Lighter still. It was more thirst quenching this time, with a slight citrus note.
Fifth through Seventh Steeps: Continued to get lighter in flavor, less complex.
Flavors: Artichoke, Citrus, Floral, Roasted, Tea, Toasty, Vegetal