Vinegar delays potatoes from turning brown and also speeds up the starch extraction. Soak the potatoes for at least an hour, but preferably overnight.
Vinegar causes the potatoes to form a thin crust that further helps in retaining their shape. Vinegar increases the acid pH levels of water which further helps the potato just like when you add a little salt to the water while boiling eggs.
If you use Russets you definitely want to soak them in water before frying because they have a high starch content but they will be crispier overall. Peanut oil or any light vegetable oil is necessary to make the best fried potatoes with the crispy crust you're looking for.
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.
Directions. Soak the potatoes in enough cold water to cover, stir in 2 tablespoons vinegar and place in the fridge for at least 1 hour and up to 4 hours. When you refrigerate the potatoes, the starch will turn to sugar which is a good contrast to the vinegar in this recipe.
Any vinegar will do
This crust is what's necessary to help them keep their shape and not become mushy or fall apart when boiling. The home cooks over at Reddit say this is because vinegar's acid prevents the pectin in potatoes from breaking down too quickly.
Instructions: Place potatoes into a pot and add 1 1/2 cups vinegar with 3 cups cold water (or enough to just about cover the potatoes). Add in 1 tbsp salt, give it a stir then bring to a boil. Cook until knife tender, around 25mins depending on the size of potato chunks.
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.
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.
How long can peeled and cut potatoes sit in water before cooking, before they begin taking on too much water? A: 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).
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.
Pick the right potatoes.
Others say that you should soak the potatoes in cold water before frying to wick away some of the starch, but doing that also requires that you'll need to dry them completely before putting them in the pan to keep them from getting mushy. The extra moisture will also prevent them from browning.
Unless a battered fry, they are not adding in salt during the process. I recommend not salting the fries till they come out of the fryer and even then, waiting for an order before salting as the fries can turn limp prematurely if salted too soon.
Some experts recommend adding vinegar to the oil to slow the breakdown of pectin (the polysaccharide that helps a potato keep its structure intact). Try as you might, though, industrial fryers will nearly always beat out whatever equipment you've got at home.
Just like you might use a squirt of lime juice to keep guacamole from browning, a bit of lemon juice or white vinegar in the bowl with the potatoes will ward off gray hues. Use one teaspoon to a half gallon of water to get all the anti-browning impact with no noticeable flavor changes.
Once the potatoes have soaked, rinse and drain them. Then — also very important — use a towel to pat them down until they are nice and dry before moving onto the next step.
It is said that excess starch on the outside of the potato can cause potatoes to stick to one another, because of the gelatinization of the starch. Also, it is said that rinsing of some of those excess sugars will reduce the risk of your fries burning and turning black (because of the Maillard reaction).
You don't want soggy loners left on the pan. These tips are completely doable, actually pretty much fail-proof. SOAK your potato chunks in cold water. This removes some of the starch and helps get them super duper crispy.
Rinsing or soaking cut raw potatoes helps to wash away a very small amount of amylose. But the potatoes must be cut into one-inch pieces to expose enough surface area to wash away any significant amount of amylose.
How long do you need to soak potatoes? Soaking potatoes for 15 to 30 minutes is sufficient, but you can soak them for up to an hour, if you have other things to do around your kitchen. I think soaking any longer than that would be unnecessary.
For deep fried potatoes, you don't have to boil the potatoes first. You can deep fry from raw. You will need to add water in the oil (not hot oil) to guarantee the inside cooks before the skin crisp.
Dry the potatoes: It is important to dry your potatoes before frying them to prevent spattering. Use a clean towel to pat them dry on a sheet pan or put them into a salad dryer to remove the excess moisture. If you store the potatoes uncovered in your cooler overnight, this will help to further dry them out.
Good little sponges that they are, the potatoes will absorb much of the mixture within 15 minutes, and be even more deeply flavored than before. The vinegar, like the salt, helps to enhance their natural flavors.
Place the fries in a single layer on the lined baking sheet. Bake at 450°F for 15-20 minutes. Then, carefully flip the fries and cook an additional 5-10 minutes (or until your desired crispness). Drizzle with vinegar and salt to taste.
"Vinegar is an inherently acidic material, so if we add a few drops of vinegar into that boiling water that is going to increase the rate of denaturing and it's going to make that happen faster and help the poached egg hold its shape better."