2 hours ago, AlaMoi said:I have potato "flour" - wonder if that's the same as potato "starch?
According to Mr Google,
Potato starch vs potato flour: what's the difference?
Potato starch and potato flour are not interchangeable as they are distinct products with unique properties. The fine, white powder of potato starch is obtained solely from potatoes, whereas potato flour includes the entire potato, including the skin. Potato starch is highly effective as a natural thickener, while potato flour can be used as an alternative to wheat flour in baking.
The entire article is here
From everything that I read, cornstarch and potato starch are interchangeable when used as a breading. Not so much when used as a thickener.
With that in mind,
2 hours ago, Duvel said:Karaage, tatsuta age,
I looked up some recipes for these and one of the recipes stated definitely that you could not use cornstarch. Doesn't that let out a whole lot of the recipe seekers that don't have access to potato starch? I couldn't find it here if my life depended on it.