Southern Swamp
On day 1 or 2, head to the area with the Witch’s Hut. Proceed to the entrance to the Woods of Mystery and follow the monkey to the end where you’ll find and injured Koume. Talk to her to find out that she’s hurt, then head back to the witch’s hut. Go inside and talk to Kotake, who will give you a bottle filled with red potion to help her sister. Note: On Day 2, Kotake will be found hovering around in the Woods of Mystery rather than inside the hut.
Romani Ranch
On Day 1, purchase a Powder Keg from the Bomb Shop in Clock Town and head to the Romani Ranch. Use the Powder Keg on the gigantic boulder, then enter the Ranch. As Link, talk to Romani and then agree to help her defend the Ranch from aliens. Return to the ranch (or wait there, your choice) until 2am that evening. Once the aliens appear, simply shoot them to prevent them from entering the barn while trying to hold out until 6am. If any of them get to the barn, you lose. If you’re getting overwhelmed, try playing the Inverted Song of Time to slow things down. Daybreak will take longer to arrive, but the aliens will move alot slower. If you successfully protect the barn, Romani will give you a bottle filled with milk.
Snowhead Area
After clearing the Snowhead Temple, head to the twin islands area with a Powder Keg and make your way up the hills to the giant boulder. Blow it up, then enter to find the Goron Racetrack. Enter the race and win to receive a bottle filled with Gold Dust.
Great Bay Area
Hookshot your was up the cliffsides near the waterfall and enter the cave at the top. Put on the Zora Mask and talk to the beaver swimming around and accept his challenge to race. When you win, you’ll have to race his brother. When you win that race you’ll get a bottle.
Ikana Graveyard
Enter the Graveyard during Night 3, put on the Captain’s Hat, and talk to the Stalchildren. Tell them to move the tombstone, then enter the hole. Inside, lead Dampe around to each of the patches of dirt and ask him to dig. Some yield nothing, while others reveal spooky blue light. Once you uncover three such lights, a Giant Poe appears. Defeat it to reveal the chest containing this bottle.
Clock Town
Get through the Anju/Kafei sidequest and you’ll get the Letter to Mama. Wait until after Midnight of day 3 and enter the Milk Bar, Latte. Deliver the Letter to Mama in person to Madame Aroma and she’ll hand you a bottle filled with Chateau Romani.