Chūka Zanmai is a line of Chinese instant noodles from Myojo Foods. In 1987, they introduced the New Chūka Zanmai line, including a deluxe series featuring hand-made ingredients and luxurious flavors like shark fin and abalone. 

The deluxe boxes were only available inside department stores and sold for ¥1,000 each, an outrageous price for prepackaged soup that apparently became a hot topic. (By comparison, as shown in this ad, the regular instant soup was ¥360 while the soup base alone was merely ¥120.)

The opulence of the period extended even to instant food.