Metal spoons should generally be avoided when serving caviar because they can react with the caviar and alter its flavor and texture. Here are a few reasons why you might not want to use metal spoons for caviar:
Reactive: Metal spoons can be reactive, which means that they can interact chemically with the caviar and alter its flavor or texture. This is particularly true for metals like silver or copper, which are highly reactive.
Texture: Metal spoons can scratch or damage the surface of the delicate caviar eggs, which can affect the texture and mouthfeel of the roe. This is especially true for metal spoons that are not polished or have rough surfaces.
Taste: If the metal spoon is reactive, it can impart a metallic taste to the caviar, which can be unpleasant and detract from the delicate flavor of the roe.
Tradition: Using metal spoons for caviar is generally not considered traditional or authentic, as the practice of using mother of pearl spoons for serving caviar has been in place for many years and is widely accepted.
Overall, while metal spoons may be convenient or readily available, they should be avoided when serving caviar to ensure the best possible flavor and texture of the roe. Mother of pearl spoons, on the other hand, are non-reactive and gentle on the delicate eggs, making them the preferred choice for serving caviar.