
Tender steamed Chinese or Japanese eggplant is dressed with a bold Hunan-inspired chili sauce, fragrant with ginger, garlic, sesame, and fermented black beans. It is spicy, savory, and silky enough to serve as a standout vegetarian side with rice.
Trim the eggplants, then cut them into 3-inch pieces. Quarter each piece lengthwise and arrange the wedges in a single layer on a heatproof plate that fits inside your steamer.
Set up a wok, large pot, or steamer with a few inches of water and bring it to a steady boil. Place the plate of eggplant in the steamer, cover, and steam for about 10 minutes, until the eggplant is very tender but still holds its shape.
Carefully remove the plate from the steamer. Keep any juices released by the eggplant on the plate, or transfer the eggplant and juices together to a serving dish.
Heat the vegetable oil and sesame oil in a small wok or saucepan over medium-high heat. Add the minced ginger and sesame seeds, stirring for 15 to 20 seconds until fragrant.
Stir in the chili oil, sesame paste, soy sauce, salt, and sugar. Mix until the sauce is smooth and just begins to bubble.
Turn off the heat. Stir in the chopped long hot pepper, garlic, half of the scallion, and fermented black beans. Add the Thai bird chili only if you want a much hotter sauce.
Spoon the hot sauce evenly over the steamed eggplant. Finish with the remaining scallion and serve warm or at room temperature with steamed rice.
Use long Chinese or Japanese eggplants for the silkiest texture; globe eggplant can work, but it may need a few extra minutes of steaming. If you cannot find Chinese sesame paste, tahini is a reasonable substitute, though the flavor will be lighter. Fermented black beans are salty, so rinse them briefly if you prefer a milder sauce. Leftovers keep well in the refrigerator for up to 3 days and are excellent served cold or gently reheated.