Pommes frites are fresh potatoes cooked in animal fat, and seasoned with salt and rosemary. http://www.flickr.com/photos/stuart_spivack/4205683848/
Pommes frites are fresh potatoes cooked in animal fat, and seasoned with salt and rosemary. http://www.flickr.com/photos/stuart_spivack/4205683848/
Something home cooks can still do.
But the prior poster is correct... McDonalds fries have never been as good since they stopped using the beef tallow.
The "best" french fries are, it's said, fried in horse fat (I first read than in Steingarten, a dubious source, but have heard it backed up repeatedly). If you Google, there's an article with someone actually tracking down horse fat and frying frites in it.
In fact, now that I think about it the only thing I do with my carefully hoarded supply is use it for frying and confit. I wonder how well it works for tasks that otherwise are better with lard (e.g. pastry pie crusts, etc.)
Ever use it in place of lard for a baking task?
(Eggs. I also do eggs in duck fat.)
The Publican, at Fulton Market, makes duck fat fries. It too fills up quickly, but they open at 3.30P every day and don't get crowded 'til 5.30 or so. And: absolutely fantastic beer list. So that's your best bet in Chicago.
Didn't affect the flavour much though. Not a single customer approached us about it at the store I worked in. Though if you took fries from two different batches, each cooked in different oil, and concentrated really hard, you could just make out the difference.
I did remember hearing folks claiming they used beef tallow back then as well.