Eggplant is alkaline food oh. Tell you a simple way to identify acidic, alkaline food: 1, acidic food: eat easy to gain weight, delicious basically acidic food. Such as meat, eggs, fish, beans, pasta, sweets, etc. 2, alkaline food: eating is not easy to get fat, not too delicious food (of course, just relative ha, ha ha). Such as vegetables, fruit, milk and so on. This is just my personal understanding, because I like to eat things are acidic food, haha, relatively less like alkaline food, although alkaline food may be relatively more healthy. By the way, there are also neutral foods, oil, salt, coffee, etc. are neutral foods. Eggplant is alkaline food, all vegetables, fruits are alkaline food, all meat, eggs, are acidic food.