Fk KFC, I started out with cheap chippers, I needed to replace every 3 months as I was doing in excess half a ton of potatoes, in a town with 2000 people. Let alone that, 250 -350 kgs of flour, 100 liters of oil every week. Eventually replaced them with industrial chippers, and spend a couple of grand on equipment upgrades eventually upgrading to a full cafe shop by the end. Eventually closed it down as I was making more money with game development, food has a relative small profit margin, you make that up with the extra stuff your selling on the side. But the profit margins just wasn't worth waking up at 4 am every day, to knead dough and general preparations for the day.
Also did every thing my self with a family member helping out on pension days or busy days. I probably peeled, cooked, and sold more slap chips that this entire forum consumes in a year in that 10 year span. Let alone the fish, vetkoek, brugers, stew and the array of other menu items and special orders for events for the local community. There is very little you can tell me about making chips I don't already know or done, tried and tested. You do know on average, a fast food joint, restaurant generally fail with in the first year, 10 years is a heck of a good run.
Why TF would I do that ? Is your penis that short that you need to compensate with floppy veggies ?