If you have eaten caviar even once at a restaurant that takes itself seriously, you've been handed a small, flat, iridescent spoon. It is almost certainly mother-of-pearl . the inner lining of an oyster or abalone shell, hand-cut and polished to a soft sheen. The first time you see one, the question is obvious: why?
The answer is part chemistry, part centuries-old tradition. Both are worth knowing.
Metal ruins caviar. Even silver.
Caviar is rich in proteins and fatty acids that interact with metallic ions on contact. Iron, in particular, oxidizes the lipids in the roe almost immediately, creating a faint but distinct metallic taste . the same taste you sometimes get from cheap cutlery on raw fish or fresh fruit.
Silver is less reactive than iron, which is why old aristocratic households used silver caviar service. But even silver, over the course of a few minutes of contact, dulls the flavor. Stainless steel, popular in modern restaurants for hygiene reasons, is worse.
Mother-of-pearl is biologically inert. It does not oxidize, does not impart flavor, does not warm at the touch (it's actually cool to the touch, like all carbonate-based materials), and is gentle enough not to crush the delicate roe bead.
What it's actually made of
Mother-of-pearl . also called nacre . is the iridescent inner lining of certain mollusk shells: pearl oysters, abalone, and some freshwater mussels. It's made of microscopic plates of calcium carbonate held together by an organic protein matrix, which is why it catches light in such an unusual way.
The same material that makes a pearl itself.
The history of the caviar spoon
The earliest depictions of caviar service in Russia, Persia, and France show small spoons carved from bone or horn . both inert materials. As trade routes opened in the 18th and 19th centuries, mother-of-pearl spoons from Asian markets reached European aristocracy and quickly became the preferred vessel.
By the late 1800s, mother-of-pearl was standard at Czarist court banquets, Fabergé designed pearl-handled silver caviar caddies, and the spoon became as much a status symbol as the caviar itself.
The tradition declined briefly through the 20th century . stainless steel was cheaper, and the post-war world had bigger concerns than the chemistry of luxury food . before being reintroduced by the great Iranian caviar houses in the 1960s and the French maisons like Petrossian and Caviar Kaspia in the 1970s.
Alternatives that also work
If you find yourself caviar-spoon-less in a moment of crisis, any of these will work in a pinch:
- Horn or bone . the original, still used in traditional Russian service
- Gold . if you happen to have a small gold spoon lying around. Gold is non-reactive.
- Glass . a chilled small glass spoon is acceptable
- Plastic . not aesthetically ideal, but inert and won't ruin the flavor
- Your own hand . the back of the hand between thumb and forefinger, known as the "caviar bump," is how master saltmasters taste their own work
What never works
- Silver (less bad than steel, still suboptimal)
- Stainless steel
- Sterling
- Anything copper, brass, or iron
- Hot or wet wood (imparts off-flavors and is hard to keep food-safe)
Caring for your spoon
Mother-of-pearl is delicate. Rinse it gently in cold water after use . never hot, never in the dishwasher . and dry it immediately with a soft cloth. Stored properly, a mother-of-pearl spoon will last generations. Some of the spoons used at the great houses of London and Paris today are over 100 years old.
The Pearl Roe spoon
Every Pearl Roe order ships with a complimentary mother-of-pearl spoon. It is the right tool for the food, and a small ritual that connects you to a thousand-year tradition of eating something extraordinary the way it was meant to be eaten.
Open the tin. Use the spoon. Pour something cold. Begin.
Tags: mother of pearl spoon, caviar accessories, how to eat caviar, caviar history, caviar tradition
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