Rk Spice Indian Restaurant Hanoi Hoan Kiem is an Indian restaurant in Hoan Kiem, Hanoi, serving butter chicken and naan. Butter chicken, garlic naan, and cheese garlic naan are listed as its representative dishes, and lassi and masala chai can also be ordered. The naan is baked large and the curry portions are generous enough that rice does not need to be added. The tandoori chicken comes out with dry meat.