Connecticut-Style Lobster Rolls

• ½ cup kosher salt, plus more for the butter sauce
• 2 (1¼- to 1½-pound/570 to 680

In a large pot, bring 3 quarts (2.8 L) water and the salt to a boil. Add the lobsters, and when the water returns to a boil, cook the lobsters for 5 minutes with the lid on, then immediately take them out