Mangalnath Mandir Bhat Pooja means the anushthan is performed at Shri Mangalnath Mandir, not under that name in a hall somewhere else. The temple is in Ujjain, Madhya Pradesh, on the Shipra. The address families should save is: near Sandipani Ashram, Mangalnath Road, Ujjain city, 456006.
It sits away from the press of the city. Devotees describe a quiet that is hard to find closer to the main shrines. The tradition holds the ground to be the birthplace of Mangal, which is why the bhat offering is identified with this mandir in particular.
श्री मंगलनाथ मंदिर, सांदीपनि आश्रम के पास, मंगलनाथ रोड, उज्जैन। भात पूजा यहीं होती है।