Eggplants really shine when stored in a cool spot away from direct sunlight~ ideal temperature range is around 7C to 13C, which is tricky to achieve unless you have a cold cellar or a very cold basement. The refrigerator is a bit too cold for them and can damage their texture and flavour. If you must store them in the fridge, try to eat within a few days. Eggplants are also sensitive to ethylene gas, so keep separate from tomatoes and fruits.