Sri Nithya Kalyana Catering Service is Chennai's most trusted hospitality resource. 'The caterer's caterer''- You only get one chance to make a lasting impression. Choose a caterer with over 20 years of culinary experience. Best food service in all vegetarian types in SouthIndian, NorthIndian, Continental, and Chinese,. A Pure Vegetarian – serving only vegetarian food with an array of dishes to suit even a hard core meat eater.