Heat your oil to medium high heat. You will know oil is ready because when a test fry is placed in it, it will sizzle. You may also opt for a thermometer and go for about 350 degrees. (Note: do not use olive oil, you need an oil that tolerates high temperatures.)
Peel and cut potatoes into ¼ inch fries.
Let raw, cut potatoes soak in an ice water bath at least 20 minutes. This will help to draw the starch out, and let them fry up crispier.
Once soaked, lay cut, raw potatoes out on a large towel, allowing ALL of the water to absorb, patting off the rest. It's very important that potatoes are dry, any leftover water will cause the oil to immediately boil over the pot, and that can be very dangerous. Make sure the kids are away from the stove for this.
Once dry, and oil is ready, fry the potatoes in 3-5 separate batches, for about 3 to 5 minutes, or until crispy and golden on the tips.
Remove from oil and salt immediately- so it sticks.