Gather the ingredients. Wash potatoes and set aside.

Fill a large pot with water; stir in salt until fully dissolved and no salt sinks to the bottom of the pot. Place potatoes in the pot and bring to a boil; reduce heat and simmer until potatoes are tender but firm, about 15 minutes. Drain; cover to keep hot and let the salt crust develop.

While potatoes are cooking, melt butter in a small pan over medium-high heat, or in the microwave. Drizzle over hot potatoes.