Step 1

In a small bowl, combine the salt, oregano, cumin and chili powder.

Step 2

Rub the pork shoulder with the spice blend.

Step 3

Line the bottom of the slow cooker with the onion and garlic, and pour in the orange juice. Place the pork in the slow cooker. Cover and cook on low for 8 hours.

Step 4

With tongs, carefully remove the pork from the slow cooker and transfer it to a rimmed baking sheet.

Step 5

Chop the pork or pull apart with a fork into bite-size pieces. Serve as a filling for tacos or burritos. Leftover carnitas can be reheated in a skillet until the edges are crispy.