How found:

1) Tell Kotake (the witch inside the potion shop) that her sister Koume is trapped in the forest and she'll give you a bottle with a red potion inside.

2) Win the Goron Races to get a bottle with gold dust inside.

3) Hookshot up the trees by the waterfall at Great Bay, then defeat both the Beaver Bros. in a race.

4) Defend Romani Ranch from the invasion for a bottle of milk.

5) On the third day, wear the Captain's Hat in Ikana Graveyard and have the dead soldiers open the tombstone. Underground, have Dampe the Gravekeeper follow you onto each dirt square and dig until you find all three flames. Defeat the Giant Poe that appears and you'll receive a bottle.
6) Give the express mail to Madame Aroma while she sits inside Latte, the Milk Bar in East Clock Town, and she'll reward you with a bottle of Chateau Romani.

    How used: Stores a wide variety of items.

    Used by: All forms