For traditional mashed potatoes place the rack in the bottom of the Instant Pot. Add potatoes to the pot. Pour water over top. Place the lid on the pressure cooker and set to high pressure for 8 minutes. Quick release the pressure. Drain the potatoes. Place potatoes back in pot and mix with a hand mixer or potato masher. Add the butter, milk, salt and pepper. Stir to combine. 

For cheddar bacon mashed potatoes place the rack in the bottom of the Instant Pot. Add potatoes to the pot. Pour water over top. Place the lid on the pressure cooker and set to high pressure for 8 minutes. Quick release the pressure. Drain the potatoes. Place potatoes back in pot and mix with a hand mixer or potato masher. Add the butter, milk, salt and pepper, cheddar cheese and bacon. Stir to combine. 

For traditional garlic potatoes start by sauteeing the minced garlic in 2 Tbsp butter using the saute function on the instant pot for 1-2 minutes or until fragrant. Remove garlic and butter from IP and set aside. Place the rack in the bottom of the Instant Pot. Add potatoes to the pot. Pour water over top. Place the lid on the pressure cooker and set to high pressure for 8 minutes. Quick release the pressure. Drain the potatoes. Place potatoes back in pot and mix with a hand mixer or potato masher. Add the butter, milk, salt and pepper and garlic butter that was reserved. Stir to combine.