Trollstice was a yearly event where Bergens were allowed to eat a Troll as this brought happiness to them. The event was hosted by the Bergen Castle chef, who picked out a Troll for each Bergen and presented it to them. The role of "chef" had become sacred to the holiday.
In Trolls Holiday, it was confirmed that Trollstice was the Bergens' only celebration, and they had no other holidays until Troll-A-Bration Day.
After discovering the Trolls and feeling happy after eating them, the Bergens caged the Troll Tree and created a tradition where once a year, they would gather around the Troll tree and each would get a feeling of happiness by eating a Troll.
When Chef captured the Trolls, the Bergens were going to celebrate Trollstice again, and Chef wanted to make it so that they could celebrate Trollstice everyday. But after Poppy and The Snack Pack showed the Bergens how to be truly happy, King Gristle Jr. abolished Tollstice.
- The Bergens had no issues eating Trolls outside of Trollstice, as shown when Grandma Rosiepuff was taken while saving Branch from Chef.
- Trolls Holiday shows Trollstice is on the 17th, but not which month it falls on.
- Dreamworks actually trademaked the following "Trollstice" trademarks on August 5, 2016; for TV entertainment, toys, games and playthings (defunct), clothing (defunct) and books and magazines