To a large mixing bowl, add ground turkey, basil, fish sauce, sugar and several turns of freshly ground black pepper. Season with 2 – 3 pinches of salt. Using your hands or a set of forks, gently mix the meat until everything is evenly incorporated. Do not overmix here as that will result in tough burgers. If you are unsure how much salt to add, fry up a tiny taste burger to check the seasoning. Add more salt if needed. Form the turkey meat mixture into 4 patties (1/2 pound each).

Preheat a gas or charcoal grill over medium-high heat. Brush the burgers lightly with vegetable oil. Also brush the grill grates with vegetable to keep the patties from sticking. Grill the patties directly over the heat for about 4 minutes a side or until cooked through. Let rest for a few minutes before building the burger. I like to cook the burgers to 155°F, and the temp goes up to 160°F as they rest.

Stack up the burger as follows: bottom bun, mayo, burger patty, tomato slice, lettuce, ketchup, top bun. Enjoy immediately!