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How Long to Boil Potatoes to Get Perfect Mashed Potatoes

How Long to Boil Potatoes to Get Perfect Mashed Potatoes

Potatoes are a true kitchen hero and are added to all sorts of dishes, but when it comes to mashed potatoes, they really shine. The key to perfect mashed potatoes lies in how you prepare them, and one of the most important steps in this process is the correct cooking time.

Each type of potato, like starchy russet or waxy Yukon Gold, brings its own texture and flavor to the dish, and knowing how long to cook them is critical to achieving that dreamy, creamy mash. We’ll dive into how long to cook your potatoes so they’re fully cooked and easy to mash so that the mashed potatoes are fluffy, creamy, and full of flavor.

Choosing the right potatoes for mashing

When it comes to making mashed potatoes, choosing the right type of potato can make all the difference. Different potatoes have different starch content, which affects how they absorb water and their final texture.

Russet (Idaho) potatoes are a classic choice for mashed potatoes. They have a lot of starch, so after mashing they have a light, fluffy texture. Medium starch Yukon Gold potatoes will give your mashed potatoes a rich, buttery flavor and creamy texture. For a firmer puree, use red potatoes, which are waxy, low-starch, and hold their shape well when cooked. These different types also differ in cooking time, with high-starch potatoes such as russets cooking faster due to their ability to absorb water more quickly. No matter which type you choose, always check for doneness by piercing with a fork or knife: when they are soft and cooked, you are ready to puree.

Stages of preparation for boiling potatoes

To ensure that the potatoes cook evenly and produce the smoothest mashed potatoes, follow these basic cooking steps:

  • Rinse and clean: Start by rinsing the potatoes to remove dirt and debris. Clean them if you like and trim away any imperfections.
  • Cut evenly: Using a sharp knife, cut the potatoes into even pieces to ensure even cooking.
  • Rinse off excess starch: To achieve a light and fluffy texture, rinse high-starch potatoes, such as russets, after slicing to remove excess starch.
  • Choose a large pot: Place the potatoes in a large saucepan that has enough room to comfortably cover them with water.
  • Fill with cold water: Add cold water to completely submerge the potatoes. Starting with cold water will help them cook more evenly.
  • Salt the water: Add 1-2 teaspoons per liter of water to enhance the flavor of the potatoes while cooking.

Emily Laure


Tips for boiling potatoes

Boiling potatoes may seem simple, but these tips will help you achieve the best results every time:

  • Bring to a boil, then cook: Start by bringing the potatoes to a boil, then reduce the heat and simmer. Boiling too hard can cause the potatoes to fall apart.
  • Check readiness: Start checking for doneness after 10-15 minutes (depending on the size of the potato pieces). Insert a fork or knife into a piece of potato – if it goes in easily and with little resistance, the potato is ready.
  • Avoid overcooking: Overcooked potatoes can become mushy and affect the texture of your mashed potatoes. As soon as they become soft, drain the water immediately.
  • Reduce humidity: After draining the water, let the potatoes sit in the pan for a few minutes to allow the excess moisture to evaporate and create a creamier puree.

Factors affecting boiling time

Several factors can influence the cooking time of potatoes:

  • Potato type: Starchy potatoes, such as russets, absorb moisture more easily, which helps them cook faster.
  • Freshness of potatoes: Freshly picked potatoes have a higher moisture content and thinner skin, which allows them to cook faster.
  • Potato size: Small potato pieces (1-2 inches) usually take 10-15 minutes to cook, while larger pieces or whole potatoes may take 20-30 minutes or more.
  • Peeled or not peeled: Potatoes with skins may take a little longer to cook than peeled potatoes because the skin acts as a barrier.
  • Height: At higher altitudes, water boils at a lower temperature, which means the potatoes take longer to cook.
  • Pot size and water volume: A smaller pot with less water may boil faster, but overcrowding the potatoes may result in uneven cooking.

Frequently Asked Questions

  • Is it possible to boil potatoes for mashed potatoes in advance?

    To get ahead of the preparation, you can boil the potatoes for mashing ahead of time. Boil as directed, then cool completely before storing in an airtight container in the refrigerator for up to two days. Before mashing, heat the puree in the microwave, double boiler or on the stove, adding a little water.

  • How does altitude affect the cooking time of potatoes?

    At higher altitudes, water boils at a lower temperature, which means the potatoes take longer to cook until tender.

  • What happens if you undercook potatoes for mashed potatoes?

    Undercooked potatoes will remain hard and will not break down completely when mashed, which will affect the texture and flavor of your mashed potatoes.