2. In a large skillet or wok, heat 2 tablespoons of the oil over high heat. Add half of the garlic and stir for 1 minute. Add half of the kale and stir-fry for 3 to 4 minutes, until it turns bright green. Transfer to a large bowl and repeat with the rest of the oil, garlic, and kale. Taste the kale; if it doesn't seem tender enough, replace all the kale in the skillet, add 3 to 4 tablespoons water, cover, and steam for a few minutes. (The kale can be prepared ahead and reheated right before serving.)
With every new health report and every new must-try recipe, there is another cooking oil conundrum. Some have a high smoke point, while others form potentially unhealthy compounds in the presence of heat. Ellie Krieger, author of Weeknight Wonders, explains how to use five types of oil.