Other common dishes are smoked salmon, oysters, caviar and "foie gras". Fish eggs are called roe and caviar. Another use is a pond for growing crabs, whitefish and sturgeon for caviar. Beluga caviar is considered a delicacy worldwide. It was our ticket to caviar and truffles. Cargoes of shrimp, asparagus, caviar and blood are considered among the most expensive refrigerated items. Oleg traded on jeans, cosmetics and perfumery, caviar and vodka. Carol and Yorish debate the violent nature of humans over caviar and champagne. The term "caviar" is separate, and denotes only sturgeon eggs. China has also exported paddlefish to Cuba, where they are farmed for caviar production. In Serbia, it was long known as "Serbian salad" or "Serbian vegetable caviar". Copper, cement, leather, textiles, fruits, saffron and caviar are also export items of Iran. The fish harvested for caviar are often nearly . Mushy peas have occasionally been referred to as "Yorkshire caviar". Pasteurized caviar has a slightly different texture.