I had an overnight in Washington D.C. a few weeks ago, and I ended up at a Nepalese restaurant in Alexandria. The had Ghee Chicken on the menu, which I ordered. It was quite different from the normal Butter Chicken I get at other Indian-style restaurants. Not tomato based, not as hot, darker. It was very tasty. I am wondering if this is a difference between Nepalese Ghee Chicken and Indo/Pak Butter Chicken and I should be looking for more Nepalese restaurants, or if this is just a difference of how this particular restaurant prepares it?