Zelda Majora's Masks - Bottles
After your mission of finding Koume in the Mysterious Woods, make sure to head back to the Old Hag's Potion Shop for a free special bottle. This bottle contains a Red Potion.
If you have defeated Goht in a battle, immediately head for the Goron Race Track. There you can win to pick up the 2nd bottle consisting of the Gold Dust.
During the first day, proceed a conversation with Romani at the ranch thus she will ask you to help her stop the alien abduction at 2:30 AM. Accept the request and protect the cows. Finally, you will be able to collect the third bottle.
If you happen to be around the waterfall near Zora Hall, pay a visit to the beavers. Accept to challenge the beavers to a race. The prize for the winner is the forth bottle.
During the afternoon of Day Three (more specifically, 6:00 PM), utilize the Captain's Hat to order the Stalchildren to reveal the content of the grave located at Ikana Graveyard. Aid Dampe to make sure that he digs up all of the mounds in the area. The Poe should appear shortly, fight it, defeat it and claim the 5th bottle.
After your acquisition of the 5th bottom (above) in which occurs at 6 PM on Day Three, deliver the Express Mail to Madame Aroma in the Latte Mild Bar. For disguise purposes, make sure you wear the Postman's Hat to give her Kafei's Letter. As a reward, you will receive the sixth and final bottle.