Rinse the ribeye under cold water to remove dirt and dry with paper towel
Slice ribeye into thin slices
Marinade the ribeye in light soy sauce, corn starch, sugar, and 1/2 tbsp oil for at least 30 minutes in the fridge
Slice the young ginger into thin slices
Add oil to the wok and add ginger and cook for about 30 seconds over High heat
Add ribeye and spread evenly, flipping periodically to allow for even cooking
Once ribeye is cooked to to your desired wellness, add pineapple and combine (I cooked mine to Medium Well)
In a small bowl, add cornstarch and water and combine well
Pour thickening into the wok and combine until the liquid thickens
Plate and garnish, if desired