Rinse soup mix and place in a large pot with 3 cups water and salt. Bring to a boil, then reduce to a simmer, cover and cook until tender, about 60–90 minutes, then serve.
Multi-Cooker
Rinse soup mix and place in the pot of a multi-cooker with 3 cups water and salt. Set the valve to sealing. On manual setting and high pressure, set for 40 minutes. Natural release the pressure for 20 minutes, then serve.