Katchar Batchar is celebrated for its authentic and high-quality Indian cuisine, often called a culinary highlight in Tokyo. It delivers a unique Indian flavor, sometimes with a subtle Japanese touch, within a cozy and homey setting. Roughly 95% of reviewers praise the food as delicious and exceptional. The butter chicken curry is a standout, with about 50% calling it "best ever," though a few (8%) found it too sweet. Cheese naan/kulcha is highly recommended by 30% for its size and taste. Other notable dishes include Lamb Seekh Kebabs and Tandoori Chicken. Service is consistently rated professional, warm, and attentive, with 20% noting staff speak excellent English. The atmosphere is described as small, homey, and welcoming, contributing to a pleasant dining experience. Described as a "hidden gem," the restaurant's signage can be hard to find. Reservations are strongly advised by over 15% of reviews, particularly for dinner, as it is frequently fully booked. Online booking may require Japanese details. Portions are generally generous.