In a bowl, combine soy sauce, broth, rice wine, sugar, sesame oil and white pepper.
Dissolve the cornstarch in ¼ cup water.
Heat a pan over high heat; add the cooking oil, swirling to coat; add the garlic and ginger; cook, stirring, until fragrant, about 15 seconds.
Add the soy sauce mixture; bring to a boil.
Reduce heat to medium and cook for 1 minute.
Add the cornstarch solution and cook, stirring, until the sauce boils and thickens.
