Whatever's in the fridge gets tossed into the wok with day-old rice for the most practical Chinese dish ever invented. This family-friendly, zero-waste approach to cooking is endlessly adaptable and naturally protein-rich.
Heat a wok or large nonstick skillet over medium-high heat, then add 1 tbsp of vegetable oil. Beat the eggs lightly and scramble them in the hot pan until just set. Transfer eggs to a plate and wipe the pan clean.
Return pan to medium-high heat and add remaining 2 tbsp of vegetable oil. Add diced carrot and cook for 1–2 minutes, stirring, until slightly softened.
Add green peas, leftover cooked protein, and half of the scallions. Stir-fry for another 1 minute, ensuring ingredients are heated through.
Increase heat to high. Add the day-old rice, breaking up any clumps with a spatula. Toss and stir-fry for 2–3 minutes until the rice is hot and a little crisp in spots.
Drizzle in the soy sauce, oyster sauce, sesame oil, black pepper, and salt. Stir well to combine, making sure all the rice is evenly coated.
Return the scrambled eggs to the pan and stir to distribute; cook just until eggs are fully mixed in and hot.
Turn off heat and sprinkle with the remaining scallions. Serve immediately while hot.