How do you get the third jar in twilight princess?

Answer 1

There is no technical "third jar" in Twilight Princess. It all depends on the order you get them in. There are four possible jars to recieve. I will list them and you can pick out which one(s) you need.

Ordon Village: You recieve this jar after you feed the cat a fish. The cat runs back to the shop keeper. Follow it into the shop and you will be rewarded with a jar of milk.

Coro: By the entrance to the Faron Woods. Talk to him and he will offer you a jar of lantern oil for 100 Rupees. Take this deal and aquire the jar.

Jovanni: Collect 20 Poe Souls and give them to Jovanni. He will reward you with a jar of fairy's tears. Take the jar. (side note: fairy's tears will be given to you after you finish the Cave of Ordeals in the Gerudo Dessert.)

Hena's Fishing Hole: Go to Hena's fishing hole which is located in the upper Zora River behind the Howling Stone. Find a sign near the back and read it. Then cast your line. It may take a while but eventually you will recieve a jar.

Hope this helps!