If you’ve been boiling your potatoes in plain water before mashing them, you’re doing it wrong—at least, according to my grandma! 
When she found out I was using plain water to cook my potatoes, she couldn’t stop laughing.
“Why would you throw away all that flavor?” she asked. And you know what? She was right! She then revealed her secret ingredient that takes mashed potatoes from good to absolutely heavenly: BOILING THEM IN MILK & BUTTER!
Yes, you heard that right! Instead of boiling potatoes in water (which drains away much of their flavor), you should cook them directly in a mixture of milk and butter. This way, the potatoes absorb all that creamy richness, leading to the most velvety, buttery mashed potatoes you’ll ever taste.
Let me walk you through Grandma’s foolproof mashed potato recipe that will change the way you cook forever! 
Ingredients You’ll Need:
2 lbs Yukon Gold potatoes (or Russet for a fluffier texture)
2 ½ cups whole milk
1 cup heavy cream
1 stick (½ cup) unsalted butter
3 cloves garlic, minced (optional, but adds incredible flavor)
1 ½ teaspoons salt (or to taste)
½ teaspoon black pepper
½ teaspoon ground nutmeg (Grandma’s extra touch!)
Fresh chopped chives or parsley (for garnish)
Step-by-Step Method to the Creamiest Mashed Potatoes
Step 1: Peel & Cut the Potatoes
Peel the potatoes and cut them into 1-inch chunks. This helps them cook evenly and absorb maximum flavor.
Step 2: Cook Potatoes in Milk & Butter (Not Water!)
In a large pot, add the milk, heavy cream, and butter.
Add the garlic (if using), salt, and nutmeg. Stir well.
Gently place the potatoes into the pot. Ensure they are fully submerged in the creamy mixture.
Turn the heat to medium-low and let the potatoes simmer gently for about 20-25 minutes, or until fork-tender.
Do NOT let the milk boil! Keep the heat gentle to prevent scorching.
Step 3: Mash to Perfection
Once the potatoes are soft, use a slotted spoon to transfer them to a large mixing bowl.
Reserve some of the cooking liquid (about ½ cup), as it will be used to adjust the texture later.
Mash the potatoes using:
A potato masher (for a rustic, chunkier texture)
A ricer (for extra smooth and fluffy potatoes)
Slowly mix in the reserved milk-butter mixture, a little at a time, until you reach your desired consistency.
Step 4: Season & Serve
Stir in black pepper and adjust salt if needed.
For extra richness, you can add a little more butter on top and mix it in while the potatoes are warm.
Garnish with fresh chives or parsley for a pop of color and freshness.
Serve immediately and enjoy the creamiest, most flavorful mashed potatoes of your life!
Why This Method is a Game-Changer
No More Bland Potatoes – Cooking in water leaches flavor out; this method infuses them with richness from the start.
Extra Creamy Texture – The potatoes soak up the butter and milk, making them naturally smooth and velvety.
Less Need for Additions – Because they are already infused with buttery goodness, you won’t need to drown them in extra cream or butter at the end.
Grandma’s Bonus Tips for Perfect Mashed Potatoes
Choose the Right Potatoes – Yukon Gold potatoes are perfect for creamy, rich mashed potatoes, while Russets make them extra fluffy.
Avoid Overmixing – Overworking potatoes makes them gluey and dense. Mash gently and stop once smooth.
Keep Warm Before Serving – Place mashed potatoes in a heatproof bowl over simmering water, stirring occasionally to keep them warm without drying out.
Final Thoughts: Never Boil in Water Again!
After trying this method, I NEVER went back to boiling potatoes in water—and I bet you won’t either! My grandma’s milk and butter method creates the most flavorful, rich, and creamy mashed potatoes ever.
Give it a try and let me know if it changes your mashed potato game forever!
