Place cubed rutabaga into a medium-sized pot. Fill with cold water and sprinkle with kosher salt. Place pot over high heat and bring to a boil.
Turn heat to medium-low and cover. Simmer for 2 – 3 hours (see note), until rutabaga reaches a rich orange color and easily splits into two pieces when pierced with a fork.
Remove from heat and drain water. Season with freshly-ground black pepper. The rutabaga can be eaten as is, sprinkled with freshly-ground black pepper, or mashed and topped with a little butter — my father-in-law’s favorite way to enjoy rutabaga.
Note: Cooking times differ – my rutabaga has been done in as little as 1 1/2 hours, and taken as long as 3 1/2 hours. I check for doneness periodically. The rutabaga reaches its best flavor once it’s fork-tender and deep in color.