0.5 pound baking potatoes such as russet or idaho ( 2 small potatoes)
0.5 pound beets peeled ( 2 small beets)
6 cups canola oil
0.5 pound purple potatoes ( 4 small potatoes)
8 servings sea salt
Equipment
bowl
baking sheet
paper towels
sauce pan
knife
kitchen thermometer
mandoline
deep fryer
Directions
Fill a large bowl with cold water. Using a mandoline or a very sharp knife, slice the baking and purple potatoes into 1/8-inch-thick rounds then transfer to the cold water to soak for 5 minutes. While the potatoes soak, slice the beets into 1/8-inch-thick rounds.
Remove the potatoes from the water and transfer them to a paper towel–lined plate, patting them completely dry.
Line a large baking sheet with paper towels. Fill a deep, heavy-bottomed medium saucepan (or deep fryer) with 4 inches of oil, leaving at least 3 inches between the oil and the top of the saucepan.
Heat the oil over moderately high heat until a deep-fry thermometer registers 350°F.
Working in batches, use a slotted metal spoon or spider to carefully place the potato rounds in the hot oil. Fry, flipping as needed, until golden brown, 2 to 3 minutes.
Transfer as done to the paper towel–lined baking sheet and immediately season with salt. Continue to fry the remaining potatoes, returning the oil to 350°F between batches.
Once all the potatoes are fried, fry the beets: Working in batches, use a slotted metal spoon or spider to carefully place the beet rounds in the hot oil. Fry, flipping as needed, until they begin to curl around the edges, 3 to 4 minutes.
Transfer as done to the paper towel–lined baking sheet and immediately season with salt. Continue to fry the remaining beet rounds, returning the oil to 350°F between batches.
In a large bowl, toss together the potato and beet chips, season with additional salt if necessary, and serve. DO AHEAD: Potato and beet chips can be fried ahead and stored in an airtight container for 3 days.
