In a large skillet, heat about a tablespoon of oil. Add onions and saute for a minute or two until they turn translucent and start getting color. Remove the onions and place them on a plate.
Next, add a tablespoon of olive oil and saute green and red bell peppers for about 2 minutes until they get to color and are still crunchy. Remove them from the skillet onto a plate.
Heat a tablespoon of oil and add steak slices. Cook them on medium-high flame for 3 to 4 minutes or until they start getting color.
Add minced garlic and ginger and cook for a few seconds until fragrant.
Now, pour red wine and cook for a minute or until it deglazes.
Add soy sauce, sugar, rice wine vinegar, and cook for a few seconds.
Once the beef is cooked, add the sautéed vegetables and season with salt and black pepper.
Once done, serve hot.
