Prepare the Potatoes: Begin by washing and peeling the russet potatoes. Cut them into thin strips to create fries, aiming for uniformity to ensure even cooking.
Soak the Fries: Transfer the cut fries into a large bowl filled with cold water. Allow the fries to soak for a minimum of 30 minutes. This crucial step removes excess starch, resulting in crispier fries once fried.
Fry the Fries: Heat vegetable oil in a deep fryer or a large, heavy-bottomed pot to approximately 350°F (175°C). Once the oil is ready, drain the soaked potatoes and thoroughly pat them dry using paper towels. Fry the potatoes in small batches for 5-7 minutes each, or until they turn golden brown and crispy. Once cooked, remove the fries from the oil and drain them on paper towels, and sprinkle with salt while they’re still hot.
Cook the Onions: In a skillet, heat a small amount of oil over medium heat. Add the finely chopped yellow onions and sauté them for about 8-10 minutes, stirring frequently, until they are beautifully caramelized and translucent in color. Once done, remove them from the heat and set aside.
Prepare the Sauce: In a separate bowl, combine the mayonnaise, ketchup, and mustard. Mix well until the sauce is smooth and creamy. For an added burst of flavor, consider incorporating some sliced pickles into the sauce.
Assemble the Dish: On a large serving plate, create a base layer with the hot, freshly fried fries. Sprinkle the shredded cheddar cheese generously over the fries, allowing the residual heat to melt it. Follow with a generous layer of the caramelized onions on top.
Add the Sauce: Drizzle the special sauce liberally over your creation, allowing it to cascade down over the fries. If desired, top with a few slices of pickles for an extra layer of flavor and texture.
Serve Immediately: These Animal Style Fries are best enjoyed right away while they’re hot and crispy. Gather your friends and dig in for a delightful treat!