The main reasons to cut the potatoes and pre-soak in water are: To allow the excess starches and sugars to be removed from the outer surface of the fry strips AND to keep the potatoes from browning prematurely from exposure to air. Covering in water helps the potato from turning a dark color.
Soaking the sliced potatoes is the fundamental first step of making proper french fries. The soaking process removes the troublesome starch on the outside of the potato, which will help the fries achieve the perfect crispness.
In this study, researchers found that simply soaking potatoes before frying can significantly reduce the formation of acrylamide and any health risks it may pose. The researchers tried three different approaches. They washed raw French fries, soaked them for 30 minutes, and soaked them for two hours.
The soaking, Mr. Nasr said, is the secret to the crisp texture of the fries. It draws out the starch, making them more rigid and less likely to stick together.
Soak the Potatoes
Make sure that you soak the potatoes for at least 2-3 hours. Soaking the sliced potatoes in cold water is one of the main steps to prepare perfect French Fries. The cold water removes the starch present outside the potatoes so that you get perfectly crispy fries.
Place them in a large bowl and cover with cold water. Allow them to soak, 2 to 3 hours. (You can also stick them in the fridge and let them soak overnight.) When you're ready to make the fries, drain off the water and lay the potatoes on 2 baking sheets lined with paper towels.
Double Fry Method = Crisp exterior, fluffy interior – If you want the best homemade french fries, you really need to cook them twice. First at a lower temperature to make the interior soft like a baked potato, then a second time at a higher temperature to crisp the edges.
Soak the uncooked potatoes for 30 minutes in an ice bath. They can soak longer, but you'll need to keep them in the fridge while they soak. Don't soak for longer than 3 hours.
We usually recommend no more than 24 hours. You can keep the potatoes from absorbing the water by making sure the water is not salted, and is chilled (you can even add ice to the water). To keep the potatoes from turning black from oxidation, add 1 teaspoon of lemon juice or white wine vinegar to a gallon of water.
The soaking, Mr. Nasr said, is the secret to the crisp texture of the fries. It draws out the starch, making them more rigid and less likely to stick together.
Give them a cold water bath: Once your potatoes are chopped, toss them into a large bowl. Then cover the potatoes completely with cold water and let them soak for at least 30 minutes (or up to overnight). This will help to rinse off the excess starch and help the potatoes crisp up beautifully in the oven.
Step 3: Add potatoes to the saltwater so they are completely submerged. Soak for a minimum of 2 hours. This is the secret step … the brining process must not be skipped. This is what gives you a fluffy delicious baked potato that really is the best you've ever tasted.
Potatoes will be firmer and crispier if you soak them in salt water before frying or cooking. Although it may seem like an extra step, this process will help you prepare the potatoes in advance.
Soaking potatoes in water helps remove excess starch. Excess starch can inhibit the potatoes from cooking evenly as well as creating a gummy or sticky texture on the outside of your potatoes. Cold water is used because hot water would react with the starch activating it, making it harder to separate from the potatoes.
Soggy fries have usually either been cooked in oil that isn't hot enough, or were cooked in too large a batch, overcrowding the pan and reducing the heat. The secret to getting tasty French fries that are crisp on the outside and nice and fluffy on the inside is to fry them twice.
The main reasons to cut the potatoes and pre-soak in water are: To allow the excess starches and sugars to be removed from the outer surface of the fry strips AND to keep the potatoes from browning prematurely from exposure to air.
What you do to your potatoes after soaking them in water depends on what you're using them for. For roasting: Pat the potatoes completely dry before adding oil and putting them in the oven, says Welsh. For frying: Rinse after soaking to rid the potatoes of excess surface starch, then drain and dry well.
First let's talk about why cut potatoes need to be immersed in water to begin with. The reason is to prevent the potatoes exposure to air, which causes dehydration, oxidation, and discoloration. Immersing cut potatoes will also help rinse off excess starch.
Many making fresh cut fries, first cut the potatoes, rinse in water till the water is clear, then transfer to plastic buckets with water, place in the walk in and come back in a few hours. Typically the excess surface starch will drop to the bottom of the bucket.
Why use salt water for soaking potatoes? There's moisture naturally found in potatoes, and moisture is drawn to higher concentrations of salt. (This is a process called osmosis.) So, if you put the potatoes in a salt water bath, that will help draw out some of their moisture, resulting in crispier fries.
Soaking the potatoes after they're cut draws out some of the starch which is naturally present in potatoes. This will result in a crispier fry. A thirty minute soak in cold water does the trick but you may soak them longer if you want.
In addition to frying and seasoning the fries, McDonald's coats them in dextrose, a form a sugar.