Unlock the following bottles by performing the corresponding tasks:
HOW TO UNLOCK
The woman gives this bottle to you at the start of the game.
Purchased from Coro South of Faron Forest for 100 rupees (includes lantern oil with purchase).
Go to the Fishing Hole that Hena owns at the place called Upper Zora River. Go to the Fishing Hole and bobber fish at the bridge where there is a sign. The water is murkier than normal. This may require multiple attempts.
Defeat and collect 20 Poe Souls and bring them to Jovani in Castle Town (where all the cats are must be able to dig).