In a mixing bowl, combine potatoes and 2 tablespoons vegetable oil. Mix well to evenly coat.Spread onto prepared baking sheet in a single layer. Bake for 20-25 minutes, flipping once halfway through. When potatoes are baking, make sauce.
Once boiling, reduce heat to medium and continue to boil. The bubbles will be like fizz from a can of coke. Continue to boil for 4-6 minutes, stirring constantly until liquid is reduced in half. Remove from heat.Stir in potatoes and serve topped with sesame seeds.