From Pikipedia, the Pikmin wiki
The Quenching Emblem (かわきのエンブレム?) is a treasure in Pikmin 2. It is actually a bottle cap from a 7 Up soda drink. It is found on the first sublevel of Emergence Cave, and can be easily located either on the ground (be sure to get rid of the surrounding Snow Bulborbs) or in the short narrow pathway. It is one of the 2 treasures in the Odd Logo series that is in the Japanese version.
“I often brag about my inexhaustible supply of self-control, but when I peer at this treasure, I can't help but want to take a drink.”
“An odd symbol that causes thirst cravings in all who view it. Its secrets cannot be deciphered!”
Names in other languages