I too used bacon instead of salt pork and let it simmer for a while so it would thicken up. (epicurious.com)
When I was a kid she often worked to recreate the greens my grandmother used to make, which started with salt pork and reportedly ended up as a fabulous and memorable side dish. (acalculatedwhisk.com)
Stir salt pork pieces in heavy large pot over medium - low heat until crisp and golden, about 20 minutes. (epicurious.com)