personally I prefer red potatoes for fries.
for frying I prefer the boil then a freeze, that sets the fries up like like your article.
Peanut oil is best IMHO set temp to 375 fries are done when they float for 60 seconds.

second method which I prefer on cold days is slice the red potatoes, drop into 1 gallon ziplock with 1/2 cup olive oil. Shake rapidly till potatoes are coated. Place in single layer on a foil lined baking pan, then put on garlic, paprika other goodies to taste. Bake at 425F for 25-30 minutes until done.