When you think of the classic mashed potato dish, you may picture it served alongside a juicy steak or crispy roasted turkey. But did you know that leftover mashed potatoes can provide even more delicious meals long after your original dinner? Knowing how long are mashed potatoes good for is essential if you want to store and enjoy them afterward. In this blog post, we’ll help guide you through understanding the shelf-life of cooked mashed potatoes – exploring both in the refrigerator and freezer – so that leftovers don’t have to come with regret.
Contents
- 1 What are the best mashed potatoes?
- 2 How do you make mashed potatoes?
- 3 Nutrition facts of mashed potatoes
- 4 How long are mashed potatoes good for?
- 5 How to tell when mashed potatoes have gone bad?
- 6 What happens if you eat bad mashed potatoes?
- 7 How to store leftover mashed potatoes?
- 8 How do I defrost mashed potatoes?
- 9 Best way to reheat mashed potatoes
- 10 Easy recipes to serve with mashed potatoes
- 11 Conclusion: How long are mashed potatoes good for?
- 12 FAQ: mashed potatoes
- 12.1 Are mashed potatoes fattening?
- 12.2 Can you make mashed potatoes without butter?
- 12.3 Are mashed potatoes still good if left out overnight?
- 12.4 Why do my mashed potatoes get gummy?
- 12.5 Can diabetics eat mashed potatoes?
- 12.6 Can you eat cold mashed potatoes?
- 12.7 Should you add milk when reheating mashed potatoes?
- 12.8 Why are my leftover mashed potatoes watery?
- 12.9 Do you start mashed potatoes in hot or cold water?
- 12.10 Is it healthier to leave skins on mashed potatoes?
What are the best mashed potatoes?
When it comes to understanding how long are mashed potatoes good for, it’s important to know the type of potato you’re using, as well as how it was cooked. The best mashed potatoes are typically made with russet or Yukon Gold potatoes that have been boiled until tender. These types of potatoes become creamy and velvety when mashed, unlike waxy potatoes like red potatoes that tend to become gummy or grainy.

How do you make mashed potatoes?
Making mashed potatoes is easy. First, peel and dice the potatoes into similarly sized pieces. Place them in a pot of salted water and bring to a boil. Reduce heat and simmer for 15-20 minutes, or until potatoes are tender when pierced with a fork. Drain the cooked potatoes in a colander, then return them to the pot. Add butter and milk or cream, then mash with a potato masher until desired consistency is achieved.
Nutrition facts of mashed potatoes
Mashed potatoes are a source of carbohydrates, providing energy to the body. They also contain dietary fiber, potassium and Vitamin B6. Additionally, mashed potatoes made with butter or milk will contain fat and protein. As such, they can be part of a balanced diet when consumed in moderation.
How long are mashed potatoes good for?
So, how long are mashed potatoes good for? Mashed potatoes will last for up to four days when stored in the refrigerator. To store, place them in an airtight container and make sure that it is placed away from any raw meats or other items. If you want to keep mashed potatoes longer than four days, freezing is a great option. Place the mashed potatoes in a freezer-safe container and they will last up to six months. When ready to enjoy, thaw in the refrigerator overnight or place the container of mashed potatoes directly into boiling water for a few minutes until heated through.
How to tell when mashed potatoes have gone bad?
Mashed potatoes can spoil quickly if kept at room temperature for too long, so it’s important to know the telltale signs of bad mashed potatoes. The easiest way to tell is by smelling them. If your mashed potatoes smell sour or off, they have likely gone bad and should be discarded immediately. Additionally, visible mold growth or changes in color are indications that the mashed potatoes should be thrown away.
What happens if you eat bad mashed potatoes?
If you eat bad mashed potatoes, you could experience stomach pain, diarrhea, or nausea. As such, it’s important to be aware of their shelf-life and not consume them beyond the recommended time frames.

How to store leftover mashed potatoes?
Once you’ve finished enjoying your mashed potatoes, the best way to store them is in an airtight container and place them in the refrigerator. Make sure to mark the date so that you know when they should be used by and throw away any leftovers after four days. If you have a lot of leftover mashed potatoes, consider portioning them out and freezing them in smaller containers. Frozen mashed potatoes can be enjoyed up to six months later when stored properly.
How do I defrost mashed potatoes?
When ready to enjoy, frozen mashed potatoes should be thawed in the refrigerator overnight. Alternatively, you can place the container directly into boiling water for a few minutes until heated through. Reheating your mashed potatoes on the stovetop or in the microwave is also an option. However, it’s important to make sure that they are heated thoroughly before eating.
Best way to reheat mashed potatoes
The best way to reheat mashed potatoes is by using a stovetop. Heat the potatoes in a saucepan over medium-low heat, stirring occasionally to ensure they are heated through. You can also microwave the potatoes on high for 2 minutes, stirring halfway through until they are hot.
Easy recipes to serve with mashed potatoes
– Creamy garlic mashed potatoes: Mash potatoes with butter, garlic, cream cheese and Parmesan cheese for a flavorful side dish.
– Loaded mashed potato casserole: Top mashed potatoes with bacon, cheese and green onions for a hearty meal.
– Ranch mashed potatoes: For a tangy twist on classic mashed potatoes, mix in ranch dressing mix and sour cream.
– Cheesy mashed potatoes: Mix potatoes with butter, shredded cheese and chives for a cheesy twist.
– Bacon and chive mashed potatoes: Add crumbled bacon and fresh chives to mashed potatoes for a delicious side dish.

Conclusion: How long are mashed potatoes good for?
Mashed potatoes can be a delicious and nutritious side dish when stored properly. It is important to store them in an airtight container in the refrigerator for up to four days or freeze for up to six months if you wish to enjoy them later. Be sure to discard mashed potatoes that have gone bad or that have been kept at room temperature too long. To reheat, the best option is to use a stovetop or microwave until they are hot and heated through. There are many delicious recipes you can enjoy with mashed potatoes, such as creamy garlic mashed potatoes, loaded mashed potato casserole, ranch mashed potatoes, cheesy mashed potatoes and bacon and chive mashed potatoes.
FAQ: mashed potatoes
Are mashed potatoes fattening?
Don’t blame mashed potatoes for being the reason you’re gaining weight. It’s all about the ingredients and recipe. Yes, adding cream and butter can make them high in fat and calories, but they don’t have to be. Learn how to enjoy delicious mashed potatoes without packing on the pounds.
Can you make mashed potatoes without butter?
You can absolutely make mashed potatoes without butter. Simply drain your boiled potatoes and garlic, but be sure to reserve 1 cup of the cooking liquid. Mash the potatoes and garlic, then add a generous amount of olive oil. Lastly, adjust the consistency to your liking by gradually mixing in the reserved cooking liquid.
Are mashed potatoes still good if left out overnight?
Think twice before eating overnight mashed potatoes. Experts suggest discarding them if left out for more than two hours.
Why do my mashed potatoes get gummy?
Get perfect mashed potatoes every time by avoiding over-mashing. The culprit is excess starch released during the process. If too much is released, your potatoes can become sticky and unpleasant. Avoid this by using a potato ricer and adding liquid when reheating. With these easy tips, you’ll have smooth, lump-free, and creamy mashed potatoes every time.
Can diabetics eat mashed potatoes?
Diabetics can enjoy mashed potatoes in moderation. The American Diabetes Association recommends including starchy vegetables like potatoes in a healthy diet. The body takes longer to break down complex carbohydrates like the ones found in potatoes, making them a good option for those with diabetes.
Can you eat cold mashed potatoes?
Did you know eating cold mashed potatoes can be healthier than hot ones? A cold cooked potato becomes a resistant starch, which resists digestion and functions like fiber in your body. Studies show that resistant starches have numerous health benefits.
Should you add milk when reheating mashed potatoes?
Revitalize your leftover mashed potatoes with a few simple steps. Add a splash of cream or milk and a pat of butter while reheating to prevent drying out. Gently stir until warmed through, being careful not to overdo it and end up with a gummy texture. Give your potatoes a creamy boost with this easy tweak.
Why are my leftover mashed potatoes watery?
Don’t let your leftover mashed potatoes turn into a soggy mess. When you reheat them, the starches in the potatoes absorb liquid and become dense. To avoid this issue, simply store your mashed potatoes in an airtight container in the fridge for up to 4 days.
Do you start mashed potatoes in hot or cold water?
Want mouth-watering mashed potatoes? Start by boiling your spuds in cold water. Add heapings of salt and avoid boiling in high heat to prevent them from breaking apart. Evenly cooked, creamy and lump-free mashed potatoes guaranteed everytime.
Is it healthier to leave skins on mashed potatoes?
Boost the nutrition of your mashed potatoes by leaving the skin on. Potato skin is abundant in fiber, potassium, vitamin C, and vitamin B – all vital nutrients for a healthy diet. Don’t miss out on these benefits by peeling your potatoes.

Jeff Herbst is the owner and proprietor of the brewery. The main reason for the brewery is somewhat convoluted and personal. Beer has been an integral part of my family. My grandparents on both sides of my family came from Germany. My mom and dad told me many stories about bathtub home-brews and exploding bottles that occurred frequently throughout their childhood. Of course, I listened to these stories with great interest. So I got interested in home brewing and then came to a conclusion that you need much better control of the process to make a consistently better beer.