Baby Bok Choy with Chile and Garlic

In a large skillet, heat vegetable oil over medium-high. Add garlic and stir until fragrant, 10 seconds. Add baby bok choy and cook, stirring frequently, until leaves are wilted and stems are crisp-tender, about 4 minutes. Add red-pepper flakes and sesame oil. Season to taste with soy sauce and toss to combine.