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    Home » Garden To Table

    French Mashed Potatoes

    Published: Aug 25, 2020 · Modified: Oct 25, 2023 · Leave a Comment

    This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases.

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    These decadent French mashed potatoes are made with boiled potatoes, milk, cream, butter, and (optionally) garlic. This recipe is based on Julia Child's purée de pommes de terre à l'ail.

    French mashed potatoes in a serving bowl.

    Recently, I found myself with a bunch of extra potatoes.

    What a problem, right?

    Usually I'd freeze extra potatoes, but my freezer is packed with lots of summer produce.

    After making gratin Dauphinois (scalloped potatoes) and then brainstorming lots of different recipe ideas, I decided to share more mashed potato ideas with you guys!

    Are you cheering? I'm going to pretend that you are.

    In the past, I've shared these creamy goat cheese mashed potatoes (and Instant Pot goat cheese mashed potatoes). More recently, I showed you how to make fluffy mashed potatoes.

    And now, I'm going to show you how Julia Child made French mashed potatoes.

    This recipe is a (slightly simplified) version of Julia Child's recipe for purée de pommes de terre à l'ail (garlic mashed potatoes) from her book Mastering the Art of French Cooking, Volume I.

    The simplifications are based on tips from one of her other books, Julia's Kitchen Wisdom. So if it seems like I'm taking the easy way out with this recipe, I am, but I'm just following her recommendations.

    This recipe has two parts. I recommend reading through the recipe in full before making.

    The first is a garlic purée, and it's totally optional.

    The second is the mashed potatoes. That part is not optional, ha!

    If you’re looking for other classic French recipes, I also recommend checking out these recipes: fish meunière (fish in butter sauce), ratatouille, French onion soup, French crème brûlée, and French crêpes (or gluten-free crêpes or vegan crêpes).

    French Mashed Potatoes Step One: The Garlic Purée

    Start with two whole heads of garlic.

    Yes, two whole heads.

    To quote Julia,

    "Two whole heads of garlic will seem like a horrifying amount if you have not made this type of recipe before.

    But if less is used, you will regret it, for the long cooking of the garlic removes all of its harsh strength, leaving just a pleasant flavor."

    Julia Child, "Mastering the Art of French Cooking, Vol I," p. 520.

    If you add the garlic, your potatoes will taste garlicky, yes.

    But since we're slow-cooking the garlic first, it's a mellow, sweet garlic flavor, not a pungent garlic flavor.

    How To Quickly Peel Garlic

    In my opinion, this is quickest way to peel garlic.

    Use a large chef's knife and cut the papery top off the garlic.

    Turn the garlic head on its side and smash it with the knife to separate the cloves.

    Next, smash each garlic clove with the flat side of the knife. I usually smash a couple cloves at once.

    The peel should slide right off, and if the cloves get smashed it's totally fine. You'll be puréeing them anyway.

    Peel the Garlic.
    Peel the Garlic

    How to Slow-Cook the Garlic

    Add the garlic to a small saucepan with a tablespoon of butter.

    Cook it over very low heat for 15 minutes.

    Cook Garlic with Butter.
    Cook Garlic with Butter

    Next, add a little cream to the saucepan, and gently simmer the garlic and cream for 10 minutes.

    The cream will thicken and the garlic will soften.

    Simmer Garlic with Cream.
    Simmer Garlic with Cream

    Scoop the garlic out of the cream, and reserve the cream.

    Add the garlic to a food processor, and use the purée setting to blend it until smooth.

    You could also finely mince the garlic by hand, but it would be a little messy (because of the cream). If you're shopping for a food processor, I love my KitchenAid 5-cup food processor.

    Purée Garlic.
    Purée Garlic

    At this point, you can store the garlic and cream in the fridge (if you're making this ahead of time) or set it aside while you work on the mashed potatoes.

    How to Make French Mashed Potatoes

    Julia Child calls for Russet (or Idaho) potatoes for this recipe.

    Russet potatoes will make these potatoes fluffy, not creamy. The potatoes in the photos are Russet.

    That said, this recipe also works perfectly with Yukon gold potatoes. Your potatoes will be creamy if you use gold potatoes.

    Start by peeling and quartering the potatoes. Boil them in salted water until they're tender (but not falling apart).

    Drain the water.

    Boil Potatoes Until Tender + Drain.
    Boil Potatoes Until Tender + Drain

    While the potatoes are still hot, use a potato masher or a potato ricer to mash the potatoes.

    A potato masher will make chunkier potatoes and a rice will make a finer mash.  I own this potato masher and an OXO ricer-style potato masher.

    Mash with a Potato Masher or Ricer.
    Mash with a Potato Masher or Ricer

    Next, place the pot of potatoes back on the stovetop.

    Heat the potatoes for just a moment or two to evaporate any excess water.

    If you used gold potatoes you can skip this step, because they absorb less water than Russet potatoes.

    Heat Potatoes to Evaporate Water.
    Heat Potatoes to Evaporate Water

    Add a few cubes of butter to the potatoes.

    Add some salt and pepper.

    Add Cubes of Butter to Potatoes.
    Add Cubes of Butter to Potatoes

    Place some cream in a small saucepan and start warming it up. If you made the garlic purée, use the leftover cream for this step, along with a little extra cream if needed.

    Begin slowly pouring the cream into the potatoes, beating the potatoes as you pour.

    The potatoes will transform as you beat in the cream.

    Add Milk or Cream + Beat French mashed potatoes Until Smooth.
    Add Milk or Cream + Beat Until Smooth

    If you made the potatoes and garlic purée ahead of time, store them separately. Mix the garlic into the potatoes just before serving.

    Why? The garlic will mellow as it sits with the potatoes, and since you worked so hard on the garlic, you want to be able to taste it.

    Serve these potatoes warm along with a dollop of butter or this caramelized onion gravy, along with honey balsamic brussels sprouts and roasted delicata squash.

    french mashed potatoes in a serving bowl.
    frenched mashed potatoes in a serving bowl
    Print Recipe Save Recipe Saved!
    5 from 4 votes

    French Mashed Potatoes

    These decadent French mashed potatoes are made with boiled potatoes, milk, cream, butter, and (optionally) garlic. This recipe is based on Julia Child's purée de pommes de terre à l'ail.
    Author: Sarah Trenalone
    Prep Time5 minutes mins
    Cook Time35 minutes mins
    Total Time40 minutes mins
    Course: Side Dish
    Cuisine: French
    Diet: Gluten Free, Vegetarian
    Servings: 6 people
    Calories: 316kcal
    Freezer Friendly?
    No
    Will It Keep?
    1 Day (See Recipe for Reheating Directions)
    Prevent your screen from going dark

    Equipment

    • food processor
    • Potato Masher or Ricer

    Ingredients

    Garlic Purée (Optional):

    • 2 heads garlic (20-24 garlic cloves)
    • 1 tablespoon butter
    • ½ cup heavy cream

    French Mashed Potatoes:

    • 2 ½ pounds Russet or Yukon gold potatoes
    • ½ cup milk or cream, plus more if needed If making the garlic purée, you can use the leftover cream
    • 4 tablespoons butter
    • 1 teaspoon sea salt, plus more to taste
    • ¼ teaspoon freshly ground black pepper, plus more to taste

    Instructions

    Garlic Purée (Optional):

    • Seperate the cloves from the garlic head by cutting off the top (the papery end), and then bang down on the garlic with the side of a heavy chef's knife to separate the cloves.
      Peel the garlic. (Use the side of a knife to smash each garlic clove, and the peel should slip off easily.)
      Peel the Garlic
    • Add the garlic and butter to a small saucepan, and cook over low heat for about 15 minutes. The garlic should be tender but not browned.
      Tip: You want to use very low heat for this step. If your stovetop has a small, less powerful burner, use that. If not, keep a close eye on the garlic to make sure it doesn't begin to brown.
      Cook Garlic with Butter
    • Add the cream and bring to a simmer over low heat. Simmer for 10 minutes, or until the garlic is very tender.
      Simmer Garlic with Cream
    • Scoop garlic out of the cream and add to a food processor. Purée until smooth. Reserve cream.
      The garlic purée can be made up to a day ahead of time.
      Purée Garlic

    French Mashed Potatoes:

    • Bring a large pot of heavily salted water to a boil.
      Scrub, peel, and quarter the potatoes. Add the potatoes to the boiling water, and cook 10-15 minutes until tender (but not falling apart).
      Drain the potatoes. Add the potatoes back to the pot and immediately run through a potato masher or ricer.
      Mash with a Potato Masher or Ricer
    • For Russet potatoes: Put the pot back on the stovetop, turn the heat to medium, and use a wooden spatula or spoon to beat the potatoes constantly for about 2 minutes. When the potatoes begin to form a film on the bottom of the pan, turn off the heat.
      If your potatoes are old they might already be dry, and a film will appear immediately on the bottom of the pan. If so, turn off the heat and move on to the next step.
      This step will remove extra moisture from the potatoes. If using Yukon gold potatoes you can skip this step since they absorb less moisture.
      Heat Potatoes to Evaporate Water
    • Add the milk or cream to a small saucepan and bring to a simmer.
      If you made the garlic purée, you can use the leftover cream for this step. You might need to add a little extra milk or cream until you have ½ cup total.
      Cut the butter into small cubes. Add butter cubes, salt, and pepper to the potatoes.
      Add Cubes of Butter to Potatoes
    • Begin beating the hot milk or cream into the potatoes. Continue beating until the potatoes are smooth and creamy.
      If your potatoes were very dry, you might need to add extra milk. (Warm the milk before adding.)
      Taste and add more salt if desired.
      To keep warm (for up to an hour), place in a pan over lightly simmering water, and cover loosely. The mashed potatoes can be made up to a day ahead of time, and then reheated in the same manner (in a loosely covered pan over simmering water).
      Add Milk or Cream + Beat Until Smooth
    • Just before serving, beat the garlic (if using) into the hot mashed potatoes.
      Serve with gravy or extra butter if desired.
      frenched mashed potatoes in a serving bowl

    Notes

    Cook time assumes you're multitasking and are preparing the potatoes while the garlic cooks on low heat.  If you prepare the garlic fully and then the potatoes, cook time will be longer.

    Nutrition

    Calories: 316kcal (16%) | Carbohydrates: 36g (12%) | Protein: 5g (10%) | Fat: 18g (28%) | Saturated Fat: 11g (69%) | Cholesterol: 55mg (18%) | Sodium: 304mg (13%) | Potassium: 830mg (24%) | Fiber: 2g (8%) | Sugar: 2g (2%) | Vitamin A: 620IU (12%) | Vitamin C: 11mg (13%) | Calcium: 65mg (7%) | Iron: 2mg (11%)
    Tried this recipe?Leave a comment and rating below!

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    About Sarah Trenalone

    Sarah is the primary creator at Champagne Tastes. She's a photographer, food writer and traveler, and is certified in Backcountry Kitchen and Backcountry Navigation from the Colorado Outward Bound School and Identifying Wild Plants from Backpacker.

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    Hi, I'm Sarah! I'm a traveler who loves to eat.   Follow along to join me on my next adventure-- in food or on the road.

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