Heavy cream will make for the creamiest mashed potatoes, but whole milk or half and half will also work. Don't use anything with less fat than whole milk, otherwise, your potatoes won't be as flavorful or creamy.
Here's 5 tips for the best mashed potatoes:
Use heavy cream or half-and-half for rich, creamy potatoes like you get at fancy steakhouses. Whole milk, light sour cream, or plain yogurt work well if you want to reduce the fat.
Skip the whole milk and go for half-and-half or cream.
Liquid dairy is what makes mashed potatoes luscious and creamy. Since it's Thanksgiving, splurge a little and use half-and-half or splurge a lot and use cream. The final dish will thank you.
Heavy whipping cream (or half and half) is a good substitute for milk in potatoes. This is actually a great option! The thicker consistency will produce a dreamy, creamy consistency that everyone will love. The flavor is bolder and richer, too, and you may enjoy it more than the original.
Can I substitute the heavy cream in mashed potatoes? Short answer: Yes. Recommended substitutes: Whole milk, evaporated milk, coconut milk, onion cream. Caveats: Dairy is a free-for-all in mashed potato recipes.
With a higher milkfat content than whole milk, heavy cream has a thick consistency and a rich, velvety mouthfeel. Many recipes that require heavy cream, such as scones or cream soups, require the added fat for better texture and flavor.
The Mistake: Cutting Potatoes Into Too-Small Pieces
They'll absorb too much water during cooking, preventing them from soaking up all the yummy butter and cream when it comes time for mashing. The best-size chunks for boiling: about 1 1/2 inches.
To thicken runny mashed potatoes with a thickening agent, add 1 tablespoon of cornstarch, flour, or powdered milk to the potatoes.
Similarly to half-and-half, milk makes a good heavy cream substitute when it's combined with melted butter. Combine 3/4 cup milk and 1/4 cup melted butter for every cup of heavy cream. This mixture is not suitable for whipping. Best for: cooking and baking.
Cover the potatoes with water and season with 1 teaspoon of the salt. Boil the potatoes until they are fork tender. Drain the potatoes and return them to the saucepan. Add 1/2 cup of the butter, hot milk, sour cream, and salt to taste; mash thoroughly with a potato masher until very creamy.
Restaurants prepare the potatoes ahead by boiling and mashing just the potato, then just before serving, it is mixed into boiling cream (or milk or even broth or a combination thereof) to reheat it and make it nice and creamy.
Do NOT add cold liquid. Make sure the milk or cream you add to your potatoes is HOT. This helps it absorb better so you don't feel the need to overmix. Overmixing is bad.
Put them in a deep casserole or soufflé dish — even a Dutch oven will do — and store in the fridge overnight. Warm them up in the oven the next day, uncovered, with a little butter on top. The extra moisture will evaporate and you'll have creamy potatoes.
Milk can ruin your mashed potatoes
And according to Serious Eats, throwing in too much milk won't just cause diluted mashed potatoes. The website reported that once you accidentally drown your mashed potatoes in milk, "there's no simple way to remove liquid" from the dish.
Here's how to do it: For every pound of potatoes in your mash, drizzle 1 tablespoon of melted butter over the dish and fold it gently into the potatoes. If the mash is still too gluey for your liking, repeat the process with another tablespoon of butter. It's that easy!
However, if you have already mixed them together, only to realized there's too much milk, the easiest thing to do is to add more potatoes to the mixture. Or if you have any dry potato flakes, that will work as well. I don't recommend adding flour or corn starch to it, unless you are plan to warm it again after adding.
Butter before milk: Always add the butter first so the butter fat coats the potato starch molecules. Then, add the hot milk to make them creamy. If you mix up the order, you could end up with gluey spuds.
Tips for the Best Mashed Potatoes
Start cooking the potatoes in cold water: This ensures that the potatoes cook evenly. Otherwise, if you start with hot or boiling water, the outsides of the potatoes cook and soften while the middles are still hard and crunchy.
A word about butter: Don't melt butter before stirring it into the potatoes because the milk solids and fat will separate. You can add cold butter to your hot potatoes since the butter will melt as a whole and distribute the fat and milk solids evenly.
Heavy whipping cream contains important fat-soluble vitamins, including vitamin A, D, E, and K. Full-fat dairy products such as heavy whipping cream contain more of these vitamins than low-fat or nonfat dairy.
Remember, the difference between regular milk and heavy cream is the amount of fat within each product. Milk ranges from 1% skim milk to around 4% whole milk. Heavy cream has anywhere between 36% and 40% fat, according to Kitchn.