Caterer-Style Gravy Base: Master Recipe for Multiple Curries

Complete comprehensive guide to making caterer-style gravy base (makhani gravy/restaurant base gravy) that can be used for multiple curries. Includes detailed method for preparing large-batch onion-tomato-cashew base, proper cooking techniques, spice ratios, storage instructions, and how to convert base into butter chicken, paneer makhani, dal makhani, and other restaurant-style dishes. Professional caterer secrets for consistent quality, time-saving batch cooking, and authentic restaurant flavor at home.