It is rich in alpha-linolenic acid, an omega-3 fatty acid that polymerizes exceptionally hard and fast when heated. It is ideal for the initial curing of a new pan or for touch-ups that need to shine.
The Best Animal Fats for Seasoning: Lard and Tallow Cast Iron Skillet
Selecting one of these is the safest path to a slick, black, non-stick surface that mimics the performance of commercial cookware. Many chefs prefer lard for its ability to create a slick surface that feels almost non-stick without the potential bitterness of some plant oils.
Lard and Tallow: The Traditional Choice Rendered animal fats like lard and beef tallow bring a time-tested approach to cast iron care. Though it is often expensive and can be fragile under extremely high heat, a few thin layers of flaxseed oil create a slick surface that is difficult to replicate with other fats.
The Best Animal Fat Oils for Seasoning Your Cast Iron Skillet
These fats are saturated, which provides structural stability to the polymerized layer, resulting in a resilient finish that handles thermal shock well. Unlike synthetic coatings, a well-seasoned layer is polymerized oil that bonds directly to the metal, providing natural release and protection against rust.
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