Slice eggplants into quarters, lengthways, and then cut each strip into three pieces.Place into a bowl and cover with water and white vinegar. Soak for 5 minutesbefore draining and squeezing out any excess water.
Place into a heatproof dish and into a bamboo steamer basket. Steam for 10 minutes until eggplant is soft.
Meanwhile, mix together chilli oil, soy sauce, oyster sauce, Shaoxing wine, sugar and white pepper.
Once eggplant is steamed, remove it from the steamer basket. Pour sauce over the eggplant and then sprinkle minced garlic, ginger and spring onion over the top.
Heat vegetable oil in a small pan on the stove until it begins to smoke. Pour over garlic, ginger and spring onion to temper. Top with extra spring onion to garnish. Serve alongside other dishes, with hot, steamed rice.