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Dinner · Part 2 of 3: Instructions

Slow Cooker Pork Collar with Leeks and Mustard Sauce Step-by-step instructions

A close-up of tender slow-cooked pork collar chunks topped with sautéed leeks and a creamy mustard sauce on a white plate.
Prep
Cook
Total
Serves
4
Includes 10 min resting

Before you start

Before beginning, ensure your pork collar is trimmed of excess fat and cut into uniform chunks to allow for consistent cooking. Clean the leeks thoroughly, as dirt often hides between the layers, and slice them into thin rounds. Have your dry white wine and veal stock powder measured and ready to go.

Ensure your slow cooker is clean and placed on a stable, heat-resistant surface. Having all your ingredients prepped in advance will make the assembly process quick and efficient, allowing you to get the meal cooking with minimal effort and stress.

Ingredients at a glance (4)
  • 2 lb pork collar, cut into large chunks
  • 3 cups leeks, cleaned and sliced
  • 1 tbsp veal stock powder
  • 1/2 cup dry white wine

Instructions

Preparation and Assembly

  1. Assemble the slow cooker
    Place the pork collar chunks into the base of the slow cooker. Scatter the sliced leeks over the meat, then sprinkle the veal stock powder evenly over the top. Pour the white wine over the mixture to provide moisture and acidity for the cooking process.
    Look for ensure the ingredients are evenly distributed
    Tip trim any excess fat from the pork collar before starting to ensure a cleaner sauce.

At this stage, the slow cooker contains the raw pork, sliced leeks, stock powder, and wine. Everything should be arranged in the pot, ready for the long, slow heat to begin. Check that the pork is evenly distributed to ensure uniform cooking across all pieces before you secure the lid and start the appliance.

Slow Cooking

  1. Slow cook the pork
    Cover the slow cooker with the lid and cook on low for 6 to 8 hours until the pork is extremely tender. Check for doneness by ensuring the pork reaches an internal temperature of 145°F (63°C). Once cooked, remove the pork from the slow cooker and let it rest for at least 3 minutes before serving to ensure the juices redistribute throughout the meat.
    Look for the pork should pull apart easily with a fork
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip avoid opening the lid during cooking to keep the temperature consistent and the moisture trapped inside.

During this phase, the aroma of the cooking pork and leeks will begin to fill the kitchen. The pork is undergoing a transformation, becoming tender as the connective tissues break down.

You will know it is progressing correctly if you smell a savory, wine-infused scent and see the liquids bubbling gently within the pot.

Final Sauce Preparation

  1. Finish and serve
    Whisk the creamy mustard sauce into the remaining juices in the slow cooker until smooth and thickened. Serve the rested pork immediately, drizzled generously with the warm mustard sauce.
    Look for the sauce should coat the back of a spoon
    Tip if the sauce is too thin, simmer it on the stove for a few minutes to reduce it further.

The pork is now fully cooked and tender. The final step involves removing the meat to rest while the sauce is finished. The juices remaining in the slow cooker should be reduced or whisked until they are creamy and consistent, ready to coat the pork pieces perfectly before serving.

Common mistakes

A common mistake is failing to clean the leeks properly, which can leave grit in your final sauce. Always rinse sliced leeks in a colander under cold water. Another error is opening the slow cooker lid too frequently, which releases heat and extends the cooking time unnecessarily.

Finally, ensure the pork is not cut into pieces that are too small, as they may disintegrate during the long cooking process. Keeping the chunks substantial helps maintain the texture and visual appeal of the finished dish.

How to tell it’s done

The pork collar is ready when it reaches an internal temperature of at least 145°F (63°C) and the meat pulls apart easily with a fork. It should be tender enough to melt in the mouth while retaining its structure.

Always use a digital meat thermometer to verify the temperature in the thickest part of the meat to ensure it is cooked through while remaining perfectly juicy and flavorful.

  • Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest

Coming up in Part 3: common questions

  • Can this dish be made with a different type of wine?
  • What is the best way to thicken the sauce?
  • Can this recipe be prepared in a pressure cooker?

Also in Part 3: variations (Herbed Mustard Pork, Creamy Mustard and Mushroom), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)