Add the potatoes, garlic, and water to your Instant Pot. Secure the lid.
Cook at high pressure for 8 minutes and use a quick release.
Drain the potatoes and garlic and return to the pot. Add 1/4 cup milk and all of the ghee. Mash until smooth, adding more milk if needed. Season with salt and pepper to taste and serve.
Notes
P.S. If you can’t find ghee at your grocery store or want to save some cash by making your own, here’s how you do it: Melt a stick of butter over medium-low heat. Let cook until the butter smells toasty and some of the solids at the bottom have begun to brown but not burn, 7 to 10 minutes. Turn off the heat and tilt the pan to one side. Use a spoon to skim off all of the whey foam at the top. Strain through a piece of cheesecloth and refrigerate until ready to use.