How long will the blanched (in oil) fries last in the cooler? What would piece of equipment would you recommend for a spin dry!
Once cut, the fries should be washed till the water runs clear. The commercial salad spinners, such as this one https://www.webstaurantstore.com/choice-5-gallon-salad-spinner-dryer/176DRYER5GL.html?utm_source=Google&utm_medium=cpc&utm_campaign=GoogleShopping&gclid=CPXejNT6iNQCFYZhfgod7fQOWw work really well at low speeds in draining off any excess water before blanching in oil.
We usually recommend placing the blanched fries in a Cambro or other brand rectangular plastic tub with a metal screen on the bottom to drain off any excess oil, cool to room temp before placing in the walk in covered with a clean towel or left uncovered for 10-15 minutes to allow any excess moisture to escape, then cover the tubs for food safety. You should use the cut blanched fries within 1-2 days.
https://idahopotato.com/dr-potato/how-long-can-i-keep-pre-cooked-blanched-french-fry-strips
https://idahopotato.com/dr-potato/is-there-one-best-way-to-make-fresh-cut-fries-for-my-restaurant
https://idahopotato.com/dr-potato/ten-steps-to-better-homemade-idaho-potato-french-fries