After years of testing, I last night, finally, managed to get my sweet potato fries crispy. I have my own deep-fryer at home and managed to get “restaurant quality” fries many years ago, but I haven’t mastered sweet potatos fries, until now.
You will need:
1 large sweet potato or 4-5 smaller ones
Corn starch, I used Maizena, a Swedish brand
Sparkling water (without any flavouring)
1. The method is actually very simple. I peeled and cut sweet potatoes into strips. I then rinsed them with cold water in a colander to get rid of excess starch. I then let them dry up.
2. Mix corn starch with sparkling water. We did not really measure, but maybe 4 deciliters (1,7 cups) of water and 4 tablespoons of corn starch, that is approximately 1 tablespoon per deciliter (1/4 cup) of water.
3. The sought texture of the mix is somewhat thicker than milk, but it should be runny. We just dipped our dried sweet potato sticks in the mixture and then put them straight into the hot fryer. You’ll need to insert them in batches so they wont stick. It’s a little bit of work, but very worth it.
4. After a couple of minutes they start to get slightly golden (the corn starch will stay white tough). Remove the sweet potato fries from the fryer and season with sea salt and any other spice you’d like.