I'm commenting here with my understanding.
The standard recipe for potato pancakes is shredded potatoes, eggs, flour, and seasoning.
The standard recipe for pate a choux is eggs + flour + liquid which, when heated, causes the mixture to puff or fluff, take your choice.
Ruhlman substituted leftover mashed potatoes for the shredded raw potatoes and then added pate a choux as the binding agent. He also added, God Bless him, lots of cheese. When fried, these pancakes got nice and crispy on the outside, but stayed light (not dense) on the inside.
Maybe that was what he was after.
Or, who knows...maybe he just needed enough egg recipes to fill out the cookbook.
http://www.finerkitchens.com/swap/forum1/264931_A_Dyslexic_version_of_*Crisp_and_Fluffy_Potato_Pancakes*_from_Michael_Ruhlman
The standard recipe for potato pancakes is shredded potatoes, eggs, flour, and seasoning.
The standard recipe for pate a choux is eggs + flour + liquid which, when heated, causes the mixture to puff or fluff, take your choice.
Ruhlman substituted leftover mashed potatoes for the shredded raw potatoes and then added pate a choux as the binding agent. He also added, God Bless him, lots of cheese. When fried, these pancakes got nice and crispy on the outside, but stayed light (not dense) on the inside.
Maybe that was what he was after.
Or, who knows...maybe he just needed enough egg recipes to fill out the cookbook.
http://www.finerkitchens.com/swap/forum1/264931_A_Dyslexic_version_of_*Crisp_and_Fluffy_Potato_Pancakes*_from_Michael_Ruhlman