Wash, peel and cut potatoes. .
Heat shortening to 325 degrees. There should be enough shortening so that potatoes can be submerged. Add potatoes and fry at this low temperature just until they are cooked. Do not brown or crisp at this point. Remove and drain. Set aside until ready to serve. You have blanched cooked the fries. This step may be done early in the day and left at room temperature until ready to finish.
When ready to serve, heat shortening to 375. Add blanched fries and cook until brown and crisp. Season with salt.