300 and 350 sound good, I am Oriental, so I just grab a pair of disposable chopsticks from the drawer and use one to stick in the oil til the chopstick tip bubbles 'a little' and try to hold at about 300'ish, and then use the second chopstick til it bubbles 'a lot' so that it's 350-375ish for the crisp.
I have powdered instant fonds de veau so I feel like sprinkling some of that on some hot french fries

Quote:
Originally Posted by
M.D. 
Aha, our national dish, french fries with mayonaise :-)
-firm potatoes (not mealy)
-rinse them before cutting them in slices
-cut them in slices of 1cm by 1cm
-dry them with a towel (don't rinse them, you'll need the starch to give them a nice golden colour)
-first bake 7-8 min @ 150°C; second bake 2-3 min @ 180°C (don't forget to shake them while they bake)
-i prefer either 'blanc de boeuf' (melted and filtered beef fat, it's white and firm at room temp but after heating it, it turns yellow/golden liquid) or olive oil
Last week, mise en place for a steak tartare with french fries:

(these are after the first bake, hence the wihte/yelow colour)
You're baking these these things? Red card, man. If you were frying them, soaking is key, as Manton said, to stop oxidization (the reason restaurants just roll up a bin over the wall-mount fry cutter and drop fries into the water-filled bin immediately) and also because you don't those things sticking together when they're frying. The insides should soften, but you need that slight water vs oil dance to get the outsides crispy and sealed.