Place the cubed sweet potatoes4 pounds in a large saucepan or Dutch oven and add enough water to cover by about 1″. Add 1 teaspoon of the salt2 teaspoons and bring the mixture to a simmer over medium-high heat. Reduce the heat and simmer, uncovered, until the potatoes are tender (in other words, it’s easy to slide a fork in and out), about 9 to 12 minutes.