How to Fix Gluey Mashed Potatoes | Cook's Illustrated (2024)

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How to Fix Gluey Mashed Potatoes | Cook's Illustrated? ›

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!

As already discussed, pastiness is caused by too much potato starch being worked into the mashed potatoes. The main way we combat this problem is by rinsing away starch, both before and after cooking potatoes for fluffy mashed potatoes. Rinsing off starch means that there is less of it that can end up in the dish.

Soupy, watery mashed potatoes usually happen because the cooked potatoes were cut into pieces that were too small, weren't drained well enough, or were overcooked. Fix them: Scoop the watery mashed potatoes into a pan and stir constantly over low heat to evaporate the excess liquid.

Add more cream and butter: More moisture and fat are the two secret ingredients to reheating any leftovers. For potatoes, reach for half-and-half or broth and butter. Cover and heat low and slow: Cover the baking dish and set it in a 350°F oven alongside any turkey leftovers you might be reheating too.

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!

Regardless of the technique, remember not to overwork the potatoes. Starch is released when potatoes are mashed, smashed, or whipped, and, if too much starch is released, the potatoes are gummy and unappealing.

Luckily, while your gummy potatoes aren't fit for consumption as standard mashed potatoes, they can still be served in a variety of other tasty ways. Add cheese and make the French version of cheesy mashed potatoes, “pommes aligot,” which specifically uses overworked potatoes.

Set potatoes over medium-high heat and bring to a boil, then reduce heat to maintain a gentle simmer. Cook until potatoes are completely tender, about 15 minutes after reaching a simmer. Drain potatoes in a colander and rinse under hot running water for 30 seconds to wash away excess starch.

You can use what you have on hand: Flour, cornstarch, or powdered milk are all solid options that are probably already in your pantry. Potato flour and potato starch would work as well. Stir in the thickening agent gradually, about a tablespoon at a time, until the potatoes have reached your desired consistency.

Don't overmix the potatoes! For mashed potatoes that are smooth without being gummy, a potato ricer is your best bet. It gently presses the potato into fine pieces, so all that's left to do is add your liquid and a pat or two of butter.

Why do some mashed potatoes get gluey? ›

When potatoes are mashed, starch is released. The more you work the potatoes, the more starch gets released. When too much starch gets released, the potatoes become gummy, gluey, and unappetizing.

Runny potatoes can happen for a few different reasons. Too much liquid: This is the most common reason. In the mashing process you may have added too much milk or broth. Boiled too long: Boiling your potatoes for too long can make them water-logged, which (you guessed it) can contribute to runny mashed potatoes.

Set your oven to 350 degrees F. Step 2: Leave unwrapped to bake. Place one or more unwrapped potatoes on a baking sheet or directly on the oven rack. Reheat in the middle of the oven until just hot in the center, 15 to 20 minutes.

The Mistake: Using the Wrong Kind of Potato

Thick-skinned varieties like russets will give you the fluffiest results. Steer clear of waxy red-skinned potatoes, which turn gluey when mashed.

You can use what you have on hand: Flour, cornstarch, or powdered milk are all solid options that are probably already in your pantry. Potato flour and potato starch would work as well. Stir in the thickening agent gradually, about a tablespoon at a time, until the potatoes have reached your desired consistency.

You can use milk, cream, half-and-half, tangy buttermilk, or chicken or vegetable stock to rehydrate your mashed potatoes. Start with 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.