Location and Uses
Thornberries are one of the rare Materials used to make the Cacto Clothes. Unlike most Materials, they cannot be obtained from Levels in the Drablands, purchased from the Street Merchant, or won in Daily Riches. Instead, Link can receive one as a reward from King Tuft for completing all Drablands Challenges in the Riverside, or as one of the random prizes for winning a Coliseum battle in the Riverside-based arena.
Following the Ver. 2.1.0 update, Link can also receive a Thornberry by speaking to the Street Merchant, who, for every ten Hero Points collected, will grant the young hero a Material of the lowest value required to craft an Outfit. The odds of winning one in the Coliseum have also been increased.
Thornberries can also be sold to the Street Merchant for 600 Rupees apiece.
- Encyclopedia (Dark Horse Books) pg. 141