How long to heat up a cooked Keisha?

It appears you are asking about heating up a cooked "Keisha." It's likely you are referring to a dish or food item, but the name "Keisha" doesn't refer to a common food.

Could you please clarify what you mean by "Keisha"?

Perhaps you are thinking of:

* A specific dish with a different name: Is there another name for the dish you're trying to reheat?

* A misspelling: Is there a similar-sounding food item you're referring to?

Once I understand what you're asking, I can provide you with the information you need about how long to heat it up.