Buried in a tiny nondescript minimall, Macau does not look impressive from the outside. And the interior décor is humble, too. But so is the décor in many of China's best restaurants. And Macau's food is Miami's most authentically Chinese. Since Macau is an ex-Portuguese colony and major South China trading port island, people from all over the world have passed through for centuries. So chefs there know how to punt -- and so does Miami Macau's chef/owner May Yuen. If some menu item sounds appealing but not quite appropriate, negotiate; May is happy to improvise for diners with special diets or tastes. Even confirmed carnivores, for instance, will find an unlisted invention of vegetable ho fan(usually called chow fun), chewy broad bean noodles sautéed dry-style with snow peas, bean sprouts, and several other fresh Chinese vegetables. There also are at least a dozen nonmenu specials nightly, often featuring exotic seasonal ingredients. Don't miss delicate sautéed pea shoots with crab or deceptively simple-sounding Maine lobster with ginger and scallion when on the board. But some of Macau's tastiest treats are available always, like salty pepper shrimp. To ensure protection against Macau's only likely disappointment, phone first. Since May is the only cook, Macau closes when her kid has a cold.