Caviar is categorized into types based on the origin and processing method. There is Russian caviar, Iranian caviar and American Caviar. Malossol, salted caviar, pressed caviar and pasteurized caviar are different types of processed caviar.

Chicken. Most people do not buy caviar. So the total amount spent on chicken is much greater than the total spent on caviar (even though caviar is more expensive). Therefore, in terms of the basket of consumer shopping, chicken is much more important had has more weight in the price index. This means an increase in the price of chicken will have a much greater impact on the index as the same percentage increase on caviar.

There isn't one, because caviar is a food.

Or you could just put anti-caviar.

An expensive Caspian Sea caviar.

egg plus fish