Empty the cold mashed potatoes into a medium saucepan or Dutch oven and set over low heat. Cover the potatoes and stir them occasionally until they are completely warmed through and smooth.
You can use milk, cream, half-and-half, tangy buttermilk, or chicken or vegetable stock to rehydrate your mashed potatoes. Start with a ½ cup of liquid for 4 cups of mashed potatoes, and add it gradually so you don't end up with potato soup. Adding extra butter is a good idea, too.
Fix them: Scoop the watery mashed potatoes into a pan and stir constantly over low heat to evaporate the excess liquid. If the potatoes are really watery, you can add either cornstarch or instant mashed potatoes a half teaspoon at a time to help the spuds thicken to your preferred consistency.
You shouldn't let butter be the only dairy you use, however. Consider adding half-and-half or heavy cream and a bit of sour cream (even goat cheese) to get the best flavor and creamiest texture every time, like in these Best Mashed Potatoes.
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.
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.
When too much starch gets released, the potatoes become gummy, gluey, and unappetizing. Overworking the potatoes can happen in a couple ways: either by simply handling them too much, or by using a food processor, blender, or similar tool, which mixes the potatoes too aggressively.
CREAMED MASHED POTATOES Add 85g/3oz butter and 150ml/5-6fl oz double cream to the mashed potato. Season to taste with salt and freshly ground black pepper. Add nutmeg to taste and mix until smooth and creamy.
Adding cold dairy to your mashed potatoes also cools the mash down — and very few people like cold mashed potatoes. Ready to put this tip into action? Bring the milk and butter to at least room temperature or, better yet, gently heat them on the stovetop before adding them to your potatoes.
Just a pinch of baking soda is all you need to create mashed potatoes as soft as clouds. When you add baking soda, it reacts with the heat of the dish and the acid in the milk or cream to create small air pockets throughout the mash. These air bubbles translate to light and airy bites. Yum!
If you find your mashed potatoes are soupier than normal, it's likely because you overcooked them, Buzzfeed says. Overcooked potatoes aren't always dry and hard, as it's possible to overboil a potato too. When you do so, more water is absorbed by the potato.
The best way to reheat mashed potatoes is to heat them covered in the oven at 350 degrees with extra milk and butter. Cook for 20 minutes or until warmed through. Don't worry if you don't have the time or means to heat your leftover potatoes in the oven.
6. 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.
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.
Overcooked or insufficiently drained potatoes can become sticky, as can the wrong kind of potato. But the main problem is overworked spuds. The science is simple: Boiled potatoes develop swollen starch cells. When ruptured during mashing, the cells release starch.
Only use egg yolks when mixing the potatoes.
They add so much creaminess and will give the potatoes an irresistible flavor. Not to mention that the yolks will give the mashed potatoes a vibrant yellow color and make them richer too.
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.
But if you've made them a little too runny for your taste, don't worry! You don't have to throw them out just yet. To thicken mashed potatoes, you can add a thickening agent like cornstarch, flour, powdered milk, or tapioca. Add one tablespoon at a time until you reach your desired consistency.
Warm the milk in a small saucepan before incorporating it into your mash. When you melt butter on the stove, its milk solids and fat separate. Adding cold butter to your potatoes will allow the butter to melt as a whole and distribute the fat and milk solids evenly.
Add a Thickening Agent
This is the most common, and perhaps the simplest way, to thicken mashed potatoes. You can use what you have on hand: Flour, cornstarch, or powdered milk are all solid options that are probably already in your pantry.