This sweet starchy , Japanese favorite is like the butternut squash cousin but way cooler. Its tastes AMAZING and is a great potato swap. A 3oz serving (about 3/4 cup of cubes) is 30 calories, 0g fat, 7g carbs, 1g fiber and 1g protein. You can find it at select grocery stores and Asian markets. Try it in your favorite Butternut Squash recipes.