How Long To Soak Potatoes To Remove Starch

How Long To Soak Potatoes To Remove Starch?

Soaking potatoes before cooking is a common practice that many home cooks swear by. But why is it important to soak potatoes? How long should you soak them for? And does it really make a difference in the final result? In this article, we will explore the answers to these questions and determine if soaking potatoes is worth the time and effort.

Why Should You Soak Potatoes?

The main reason for soaking potatoes is that they are naturally rich in starch. While starch is not inherently bad for you, it can have some negative effects. For starters, starch can be allergenic for some individuals, causing digestive issues such as bloating and gas. Additionally, starch can raise blood sugar levels, which is a concern for those with diabetes or those trying to maintain stable blood sugar levels.

Furthermore, potatoes contain nitrates, which can be converted into harmful nitrites under certain conditions. Soaking potatoes can help remove these nitrates, making them safer to consume.

Lastly, soaking potatoes can improve their characteristics when cooked. Soaking helps to remove excess starch, resulting in a lighter and fluffier texture. It can also help reduce the chances of potatoes turning brown when fried or roasted.

How To Soak Potatoes

To properly soak potatoes, start by peeling and removing any problem areas from the potatoes. It’s important to note that greenish potatoes should be discarded, as they contain solanine, a toxic compound.

Next, rinse the potatoes under cold water to remove any dirt or debris. Then, cut the potatoes into cubes of your desired size. Pour warm water over the potatoes and let them soak for 15-30 minutes. If you are working with smaller cubes, you can soak them for up to two hours. For whole potatoes, it is recommended to soak them overnight.

Fastest Way To Remove Starch From Potatoes

If you’re short on time and need to remove starch from potatoes quickly, there are a few tricks you can try. Cutting the potatoes into smaller pieces will help speed up the starch removal process. The increased surface area allows more starch to be released into the water.

Additionally, consider changing the water a few times during the soaking process. This will help remove more starch from the potatoes. Simply drain the water and refill the container with fresh warm water.

A Few Notes About Potatoes

Before we delve further into the topic of soaking potatoes, it’s important to note a few things about potatoes themselves. While the skin of a potato contains valuable vitamins and nutrients, it’s crucial to be cautious when it comes to store-bought potatoes. These potatoes may contain higher levels of nitrates, which can be harmful if consumed in large quantities. Soaking the potatoes can help reduce the nitrate content, making them safer to eat.

It’s also worth mentioning that soaking potatoes is recommended whenever possible, regardless of the time you have available. Even a short soak can make a difference in removing starch and improving the overall quality of the potatoes.

How To Cook Potatoes (Including Soaked Ones)

Now that we know the importance of soaking potatoes, let’s discuss how to cook them properly. It’s essential to be mindful of the cooking methods used, as heating starchy plant foods above 250°F can lead to the formation of acrylamide, a potentially harmful carcinogen.

To minimize the formation of acrylamide, it is preferable to steam, stew, or boil potatoes. These cooking methods help retain the nutrients and minimize the risk of acrylamide formation. If you have soaked the potatoes before cooking, you’ll be pleased to know that pre-soaked potatoes can reduce the acrylamide concentration by 48% when cooked to a light golden crust.


In conclusion, soaking potatoes to remove starch is not only useful but also necessary, especially for individuals with health concerns. Soaked potatoes are safer to consume, as they help avoid allergic reactions and reduce the risk of digestive issues caused by excess starch. If you’re short on time, soaking the potatoes for at least 15-30 minutes can still provide significant benefits.

Soaking potatoes brings numerous advantages without compromising taste or texture. It helps remove starch, nitrates, and improves the overall quality of the potatoes when cooked. So the next time you’re preparing potatoes, take the time to give them a soak and enjoy the benefits it brings to your dish.


Does soaking potatoes for an extended period reduce the potassium content?

Yes, soaking potatoes for up to 3 hours can reduce the potassium content. If you have specific dietary restrictions or concerns about potassium intake, it’s advisable to limit the soaking time.

Do soaked potatoes make better fries?

Absolutely! Soaked potatoes make for better fries. They tend to be crispier, less sticky, and healthier overall. Soaking helps remove excess starch, resulting in a better texture and taste.

Can I soak potatoes in milk?

Yes, soaking potatoes in milk can enhance the taste and texture of the final dish. The milk helps tenderize the potatoes and adds a subtle creaminess to the flavor. Give it a try and see how it elevates your potato dishes.

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