Add two tablespoons of oil to a heated skillet.
Fry the green beans for 3 minutes, stirring occasionally to prevent burning.
Remove the fried green beans and transfer them to a bowl; set aside.
In the same pan, place the remaining oil.
Fry ginger slices and onion slices until fragrant for 60 seconds.
Add in crumbled tofu and stir to cook for another 5 minutes.
Add in Thai green chili, brown sugar, soy sauce, and oyster mushroom sauce.
Stir and continue sautéing for 2 minutes.
Add in the basil leaves, red bell pepper, and ground white pepper.
Cook until the basil is slightly wilted.
Add in the fried green beans.
Mix well and season with salt to taste.
Add a splash of lemon juice.
Turn off the heat and serve with rice