Step 1Stir the fish sauce with the sugar until the sugar is dissolved. Set aside.
Step 2Drop the broccoli florets into a saucepan of boiling water. Cover and boil 2 to 3 minutes. Drain.
Step 3Heat the oil in a wok over medium heat. Add the garlic and fry until golden and crisp, 3 to 4 minutes. Drain on a paper towel. Add the fish sauce mixture to the oil remaining in the pan. Add the broccoli and stir until blended with the seasonings and heated through. Turn out onto a heated platter and top with the fried garlic.