In a large bowl, mix the sugar, corn syrup and hot water until sugar is dissolved.
Peel potatoes and slice ¼" think using mandolin or food processor with a french fry blade.
Place cut potatoes in the sugar water solution and refrigerate for 30 minutes.
Heat oil to 375°. Drain the potatoes and fry for 90 seconds. Remove fries from hot oil, drain on paper towels, and refrigerate for 10 minutes.
Carefully add Wagyu beef tallow to the hot oil. Add partially cooked fries back to the hot oil and cook for 5 - 7 minutes until golden brown. Drain on paper towels and sprinkle with fine sea salt. Bet you can't eat just one.