If you have overripe eggplants in your pantry, keep in mind that there’s a possibility that they may be bitter, as eggplants tend to develop more phenolic compounds the longer they sit. To avoid unwanted bitterness, it’s best to use fresh eggplants as soon as possible. However, you may try roasting overripe eggplant for dip recipes since the roasting and caramelization process will eliminate some of the undesirable flavors.