PO-TAY-to or PO-TAH-to, pronunciation doesn’t matter. But when it comes to pillow-white, creamy mashed potatoes, lumps, gluey, too bland, and too cold are the most unacceptable words. While cooking mashed potatoes, many cooks make very common mistakes that result in lackluster spuds and disappointments around the dining table.

Stay relaxed! We have collected together these common pitfalls and heck to avoid them. Keep these things in mind when executing a mashed potato recipe, and we bet your guests will beg you to make mashed potatoes every Thanksgiving.
Common Mistakes with Mashed Potatoes
Using the Wrong Kind Of Potatoes

Potatoes with higher starch result in the fluffiest and smoothest mash. Starchy potatoes have a natural ability to absorb flavoring easily. On the other hand, waxy potatoes require more mashing which results in the gluey, flavorless, and tasteless mash.
If it’s not possible to swap the waxy potatoes with starchy ones, toss them with oil, garlic, and rosemary and roast them, instead of boiling them.
Not Washing the Potatoes

Probably you are skeptical if there is anyone who never washes potatoes before peeling them off. But we considered mentioning pitfall here for better-mashed potatoes.
Many people peel off potatoes’ skin without washing them. It will cause specks of dirt in your recipe. So make sure you scrub and rinse spuds thoroughly before using them.
Chopping Potatoes into Pieces That Are Too Small

Too small chunks of potatoes absorb water at the time of boiling more than absorbing yummy butter and cream flavor while mashing. The ideal size for boiling is 1 1/2 inches. If you have mistakenly chopped them smaller, keep an eye on the pot to make sure they don’t turn waterlogged or overcooked.
Adding Potatoes Directly To Hot Water

Doing this will cook the potatoes chunk from the outside, and the inside will remain uncooked. To avoid blunder with your recipe for mashed potatoes, put the potato cubes in a pot, cover it and then bring to a boil so that everything comes to a temperature at the same time.
Not Salting the Water
Like pasta, potatoes also absorb salt while boiling. It’s another way to season and improve the flavor.
Mashing in Cold Butter and Cream
Never mash boiled potatoes directly with the cold butter and cream. It will inhibit absorption and bring down the temperature of your recipe. If you have already made this mistake, you have to reheat the mixture. Heat skillet half full of water and insert the pot of mashed potato. Stir it and let it warm until heated thoroughly.
The expert chefs recommend bringing butter and cream to room temperature before adding spuds.
Overworking Potatoes With a Food Processor
The best tool for mashing spuds is an old-fashioned masher or food mill. If you have done the damage, you can execute casserole recipes using this pasty potato mash.
Making Them Too In Advance
Mashed potatoes don’t sit in good condition for long periods. Refrigeration makes them taste like cardboard. So never cook mashed potato recipes to advance. If you want to make them ahead, just place the prepared potatoes in a heat-proof bowl. Cover the surface with plastic wrap and put it into a pot of simmering water for two hours. A slow cooker with a warm setting will work too.
Overcooking the Potatoes

Overcooking mashed potatoes make them absorb a lot more water than necessary. They become soupy and require an abundance of spices to have even a little taste. Needless to say, unless you’re absolutely hungry, you won’t enjoy eating them. Sure, they’re still edible, but they won’t offer you any satisfaction or compliments from your guests. It’s basically a waste of perfectly fine potatoes.
Undercooking the Mashed Potatoes
Just as bad, if you undercook your mashed potatoes, you’ll be in for quite a surprise. Drain the water too early, they’ll be too hard to mash properly. As such, the overall results will be less than ideal and the taste will also be lackluster, to say the least.
Fortunately, if this happens, you can fix the issue by throwing them into a baking dish and cooking them in a low oven. The heat should soften them a little and make them absorb more flavors.
Making Them Only Using Sweet Potatoes

Sweet mashed potatoes are absolutely phenomenal. Their taste is a delight for anyone looking to sweeten the deal *pun intended*. However, many rookies make the mistake of adding 100% only sweet potatoes into the mix.
To avoid the overwhelming heavy meal that results from this, you can try mixing them with a few russet potatoes. Doing so will make the meal feel lighter without sacrificing much of the inherent sweetness.
Final Thoughts on Cooking Mashed Potatoes
Cooking mashed potatoes might not be hard, but mistakes are easy to make. However, as long as you pay attention to a certain recipe’s instructions and avoid these 11 common mistakes, you should be in for a delicious and satisfying meal. In any case, practice makes perfect. So do it until you get it right. Best of luck and “bon appetit”!

I’m Asma Sheikh, a home cook and recipe developer with a passion for all things food. On my blog (The Kitchen Advisor), you’ll find everything from healthy weeknight dinners to decadent desserts, and everything in between. So whether you’re a seasoned home cook or just getting started in the kitchen, I hope you’ll find something here that inspires you to get cooking!