Yes, if you keep it in the fridge, it will last longer.
It isn't safe to leave any food, including eggplant, unrefrigerated for over two hours.
Yes, gravy will go bad if not refrigerated. The pH and water activity are not low enough to make it shelf stable without a canning process.
Of course milk needs to be refrigerated because if you don't refrigerate it, it will get chunky and go bad.
Roasted eggplant never tastes bad, especially when you serve it with a lot of tomato sauce. Go to finecooking.com and look for "oven roasted eggplant" for recipes. Use plenty of salt.
As long as it stays refrigerated, it should not go bad before the expiration date. If it's left out, it should be eaten the same day. Depending on tempertaures, you could go another day, but I personally wouldn't.
yes after a while. if you want it to last longerput it in the freezer
No, unless mixed, than it needs refrigerated.
Fresh eggplant will be firm to the touch with no soft spots or discoloration.
They're soft if they're bad.
the eggplant will usually get heavier and it will slowly turn brown and soft. It will take about 1-2 weeks for it to overripe if you got it purple
Blackberries do need to be refrigerated, or else they will go bad
Cooked, breaded eggplant should be good refrigerated for 3 to 4 days. It may, however, become mushy and lose quality.
All penicillin will go bad after a period of time, but it is actually better to keep liquid penicillin refrigerated. It is a good idea to check the expiration date on your penicillin, and dispose of it when it expires. Penicillin that has gone bad will not help you, and you should be careful with medications that are past their date.