The food lab better home cooking through science ( PDFDrive ) 1141

heated to 400°F in a wok or Dutch oven until golden
brownandcrisp,about2ẵminutes.
SERVES4
1ẵpoundsrusset(baking)potatoes(about3large),
scrubbed
1ẵtablespoonsdistilledwhitevinegar
Koshersalt
ẵcupvegetableoil
1ẵcupsbuttermilk
1teaspoongarlicpowder
1teaspoonpaprika
1teaspoonfreshlygroundblackpepper
ẳteaspooncayennepepper
ắcupall-purposeflour
ẵcupcornstarch
1teaspoonbakingpowder
1. Adjust an oven rack to the lower-middle position and
preheat the oven to 400°F. Split the potatoes in half
lengthwise. Place one half cut side down on the cutting
board and slice into planks ⅓ to ½ inch thick. Repeat
withtheremainingpotatohalves.
2. Place the potatoes and vinegar in a medium saucepan,
add2quartswaterand2tablespoonssalt,andbringtoa
boil over high heat. Boil until the potatoes are fully
tenderbutnotfallingapart,about10minutes.Drain,then
transferthemtoamediumbowl,addthebuttermilk,and
toss gently to combine (it’s OK if some potatoes break).


Allowtositfor5minutes.
3. Meanwhile, add the oil to a rimmed baking sheet and

place it in the oven to preheat. Combine the garlic
powder, paprika, black pepper, cayenne, flour,
cornstarch, baking powder, and 1 tablespoon salt in a
largebowlandwhisktocombine.
4.Drainthepotatoesandreturnthemtothebowl.Sprinkle
half the flour mixture over them and turn a few times.
Sprinkle the remaining flour mixture over them and fold
gentlyuntilallthepotatoesarecoated.Letthemsitinthe
flourmixtureforatleast5minutes,tossingoccasionally,
until a thick layer of coating has built up around each
plank.
5.Workinginbatches,transferthepotatoestoafine-mesh
strainer and shake gently over the sink to remove the
excessflour,thentransfertoalargebowl.
6.Carefullyremovethebakingsheetfromtheoven(theoil
shouldbelightlysmoking)andaddthepotatoplanksina
single layer. Return the baking sheet to the oven and
bakeuntilthebottomsideofthepotatoesislightgolden
brown,about10minutes.Removefromtheovenandflip
the potatoes using a thin flexible spatula. Return to the
oven and continue to bake until both sides are deep
golden brown and crisp, 10 to 15 minutes longer. Drain
on paper towels, season with salt to taste, and serve
immediately.