Revenge is a Dish Best Served Cold?

What are you talking about? Foods are served cold all the time. Do you like cold cuts? Ice cream?

The meaning of the saying is to take time planning your revenge, do not act in the heat of the moment. Spring your plan when the target is least likely to expect it.

It means you need to be a cold person to follow through with acts of revenge. A cold person is someone who doesn't care about anything but themselves.

No, it means that if you're going to take revenge, you should not do it in the "heat" of anger, in the "heat of the moment," but you should plan it, "cold-bloodedly," and do it very deliberately, knowing exactly what you're doing.

And it's ridiculous to say that a person would never serve cold food. Lots of foods are served cold. Poached salmon. Cheese. Salads.

No, it means you need to take your time to plan and implement the revenge. If you implement revenge too quickly (while the meal is still hot) it may not be as satisfying as it would be after planning (when the meal cools down).

"Served cold" meaning to let it sit for awhile, so when you take revenge, it is well thought out

no it means a cool calm collected strategy to get maximum effect and least comeback ie the murder of Gaddafi

Kill your uncle when he is in a state of sin so you can be sure he will go to hell.