🫙 Tallow Rendering Calculator

Tallow Yield Guide

Rendered yield depends heavily on fat type and rendering method. Here are reliable real-world numbers:

• Suet (kidney/leaf fat): 70–75% yield — almost pure fat, minimal connective tissue
• Mixed trim: 50–60% yield — typical butcher scraps
• Fatty meat scraps: 40–50% yield — lots of protein and connective tissue reduces yield
• Wet vs. dry rendering: Wet rendering (with water) is more forgiving and produces a lighter-colored tallow. Dry rendering creates richer cracklings but can scorch if not watched.
• Double rendering: Strain once, let it cool and solidify, melt again and strain through cheesecloth. Produces much purer, whiter tallow with longer shelf life.
• Storage: Pure rendered tallow lasts 1 year at room temp, 2+ years refrigerated, indefinitely frozen.

Soap safety: Lye (sodium hydroxide) is caustic. Always add lye TO water, never water to lye. Wear gloves and eye protection. Lye calculator values use a SAP value of 0.141 for beef tallow with 5% superfat.