Add salt pork, chopped onion, dried chile pepper, and enough cold water to cover peas. Cover tightly, set over medium-high heat, and bring to a boil. Reduce heat to low and simmer until almost tender, about 40 minutes. Check occasionally and top with more water, if needed, to keep peas covered.☞ TESTER TIP: If you are using frozen field peas, you may only need to cook for 20 minutes before adding the beans.