Hawaiian Mineral Water Sold in Japan
Puzzle 4 of Expensive foods Medium Pack
Question is: Hawaiian Mineral Water Sold in Japan
and the answer is: NIGARI
Word Meaning:
NIGARI — (food) bittern: the liquor remaining after halite (common salt) has been harvested from saline water (brine), used as a coagulating agent in the manufacture of tofu.
Definitions from Wiktionary.