Question: can quiche be served cold?
Answer: Hot or cold? Quiche must be eaten at least residually warm. Straight-from-the-fridge, cold quiche is a sad, drab thing, the filling set and leaden, the pastry all waxy with congealed fat. You need to loosen that quiche up a little: light some candles, give it a metaphorical massage, warm it through in the oven.