Peel and chop the potato into 1-inch cubes. Add to a pot and add 4 cups of water.
Bring the pot to a boil over medium high heat and boil for approx 15 minutes, or until the potatoes are soft and easily pierced with a fork.
Using a slotted spoon, transfer the potatoes to a blender, reserving the cooking water.
Pour the cooking water into a measuring cup. You'll need 4 cups so if some of the water was absorbed into the potatoes or evaporated during the cooking process, add fresh water to make 4 cups. Add this water to the blender as well.
This step is optional (and don't do it if you're on Whole30), but you can also add 1 tsp of maple syrup at this time.
Blend the mixture on high for 1-3 minutes, or until completely blended and creamy. Store in the fridge for up to 5 days or the freezer for up to 3 months.