Hot pot red oil is like fish eggs because butter and rapeseed oil are mixed together, and the fried dishes are more fragrant and full of taste than pure oil. This mixed oil cooking method is widely used in Sichuan cuisine, and the bottom material of fish seed hot pot is a specific product fried with butter and rapeseed. Fish-seed-shaped hot pot bottom material is sought after by many hot pot restaurants in Sichuan and Chongqing because of its fast fragrance and rich taste. Many hot pots in Chongqing and Chengdu use this kind of bottom material.