There are many kinds of "Idaho potatoes" with one of two varieties of russet likely being the most common. If they looked like a Russet they most likely were but Yukon Golds, Reds, and Fingerlings are also grown there.
Also look up recipes for Pomme Frites(AKA the original French Fries). They use the same/similar double cook method.
With all due respect, being a born and raised Idaho boy…. their is one tried and true potato to true Idahoans… The Russet! Just sayin!
