Wash the eggplants and remove the stem. Cut the eggplants into 2-inch pieces and quarter each piece.
Steam the eggplants in a steamer basket or a colander placed in a pot with water for about 8-10 minutes or until fork-tender and set aside.
Finely slice the red chillis and scallions. Finely mince or press the garlic cloves and ginger and roughly chop the red pepper.
In a wok or a large skillet, heat some vegetable oil over medium-high heat. Add the red chilis and stir for 2 minutes.
Add the garlic and ginger paste, the white part of the scallions, and the red pepper. Cook for about 5-6 minutes.
In a bowl, mix the sauce ingredients: light soy sauce, dark soy sauce, rice vinegar, vegetable oyster sauce, sugar, cornstarch, and water or vegetable stock.
Add the sauce to the wok or skillet.
Add the steamed eggplant to the wok or skillet, and gently stir well to combine. Make sure the eggplant pieces don't break.
Garnish with the green part of the scallions and a drizzle of sesame oil. Turn off the heat and serve.