Rendering Pork Fat into Lard: Stovetop, Oven, Slow Cooker & Instant Pot

Rendering pork fat into lard is a simple process that transforms raw fat into a creamy, shelf-stable cooking fat with a high smoke point and neutral flavor. You can render lard using a stovetop pot, oven, slow cooker, or Instant Pot. Whichever method you choose, the basic principle is the same: gently heat pork fat until the liquid fat separates from the solid connective tissue, then strain out the crispy bits (cracklings) and store the golden liquid, which turns white and creamy as it cools.

Choosing Pork Fat for Rendering

The best lard comes from leaf fat, the mass of fat surrounding the pig's kidneys. It is very pure, soft, and has a neutral flavor that makes it ideal for pastries and frying. Pork fatback is the thick layer of fat under the skin along the back; it renders well but may have a slightly porkier flavor. Avoid using fat from bacon or heavily seasoned cuts, as the flavor will carry into the lard.

You can ask a butcher for leaf fat or fatback. Some grocery stores sell pork fat in the meat department. If the fat is not already ground, ask the butcher to grind it, or chop it finely at home. Smaller pieces render faster and more efficiently.

How to Render Pork Fat on the Stove (Wet Rendering)

The stovetop method, also called wet rendering, starts with a small amount of water to prevent the fat from burning before it begins to melt. The water evaporates as the fat renders, leaving pure lard behind.

1. Chop or grind 2-3 pounds of pork fat into small pieces (about 1/2 inch cubes).
2. Place the fat in a heavy-bottomed pot or Dutch oven. Add about 1/4 cup of water.
3. Set the pot over medium-low heat. As the fat warms, it will start to melt and the water will prevent scorching.
4. Stir occasionally. After about 30-45 minutes, the water will have evaporated and the fat will be bubbling gently in its own rendered liquid.
5. Continue cooking until the solid pieces (cracklings) are golden brown and floating in clear liquid fat, about 1 to 1.5 hours total.
6. Remove from heat and let cool slightly. Strain through a fine-mesh sieve lined with cheesecloth into a clean, heatproof container.
7. Let the lard cool to room temperature, then refrigerate or freeze. It will become white and solid.

How to Render Pork Fat in the Oven (Dry Rendering)

The oven method, or dry rendering, uses low, even heat without added water. It is nearly hands-off and produces a very clean lard.

1. Preheat oven to 250°F (120°C).
2. Chop or grind the pork fat into small pieces.
3. Place the fat in a large oven-safe pot or Dutch oven. Do not add water.
4. Cover the pot and place in the oven. The cover helps keep the temperature stable but can be left slightly ajar to allow steam to escape.
5. Cook for 2-3 hours, stirring occasionally, until the cracklings are browned and the fat is mostly liquid.
6. Remove from oven and strain as above.

How to Render Pork Fat in a Slow Cooker (Crock Pot)

A slow cooker is ideal for rendering lard because it maintains a consistent low temperature over many hours. This method is very forgiving and requires little attention.

1. Chop or grind the pork fat into small pieces.
2. Place the fat in the slow cooker. Add 1/4 cup of water if desired (wet rendering) or nothing at all (dry).
3. Set the slow cooker to low. Cover with the lid slightly ajar to allow moisture to escape.
4. Cook for 4-6 hours, stirring occasionally, until the fat has melted and the cracklings are golden.
5. Strain and store as described.

How to Render Pork Fat in an Instant Pot

An Instant Pot (or any electric pressure cooker) can render lard quickly using the slow cook function, but the pressure cook function can also work with caution. The slow cook method is recommended for best results.

1. Chop or grind the pork fat.
2. Place the fat in the Instant Pot inner pot. Add 1/4 cup water.
3. Select the "Slow Cook" function and set to "Less" or "Normal" (low). Leave the vent open or use a glass lid if possible.
4. Cook for 3-4 hours, stirring occasionally, until the cracklings are browned.
5. Alternatively, use the "Pressure Cook" function on high for 30 minutes, then allow natural release. Note: this method may produce a more emulsified lard but still works.
6. Strain and store.

Straining and Storing Rendered Lard

Straining is essential to remove all solid bits, which can cause the lard to spoil faster or develop off flavors. Use a fine-mesh strainer lined with cheesecloth or a coffee filter for the clearest lard. Pour the hot liquid fat through the strainer into a clean glass jar or heatproof container. The cracklings left behind are delicious as a snack or in cornbread.

Let the lard cool to room temperature, then seal tightly. Store in the refrigerator for up to 6 months or in the freezer for up to a year. If kept at room temperature, lard will last about a month, but refrigeration is safer. The rendered fat should be white and creamy with a mild aroma.

Comparison of Rendering Methods

Using Your Rendered Lard

Lard is a versatile fat. Use it for frying, sautéing, baking, and making flaky pie crusts or biscuits. It has a high smoke point of about 375°F (190°C), making it excellent for deep frying. The neutral flavor of leaf lard is especially prized in pastries, while fatback lard may add a subtle porky note suitable for savory dishes.

If you don't have pork fat, you can render beef fat into tallow using the same methods. Tallow has a stronger flavor and higher smoke point, making it great for roasting and frying.