Kitchen Drain Blocked With - Fat

Here’s a complete, step-by-step review of the problem — covering causes, symptoms, solutions, prevention, and product/tool recommendations. 1. Overview of the Problem A fat-blocked kitchen drain occurs when cooking oils, grease, butter, lard, or fatty food residues are poured down the sink. Over time, these substances cool, solidify, and stick to pipe walls, trapping food particles and causing a complete blockage.