The recipes for these Christmas-themed building roof blocks can occasionally be found in randomly spawning Holiday Gift-boxes during Christmas times - like from December 14th 2015 until January 13th 2016.
The roof, once crafted, can be rotated by pressing and holding R (as the default key) while moving the mouse.
Even though the crafting recipe is only available for a limited timespan, you can keep it after finding it and after learning it, it will be permanently added to your crafting menu. As a rare recipe it will also carry over to any other gameworld that you're playing on.
With update R46 in September 2017, the exploit that allowed rare Holiday Recipes to be learned via Adventures was fixed. It is still possible to learn these Recipes by visiting players on their game world who have stored surplus duplicates of the Recipes.
To craft 8 Gingerbread Roofs at once you'll need:
- 1 (block of) Snow from Taiga-biomes, Mountains, Frozen Deserts, frozen Oceans, Canyon-tops, snowy Tundras and the like, or as a loot/pet-havest from Arctic Mirus
- 1 Gingerbread Loaf made in the Cooking Station with the "Bread" recipe of Wheat (grown from Seeds found in Tallgrass) and Molasses (from Arctic Mirus, Blizzard Chizzards or Rambeaus
- 2 Stone Rods made of Stone, Limestone or Bedrock in a Processor
Since update R42 in May 2017 inner and outer corners blocks can be created for Gingerbread Roofs too by putting them into a Processor. No crafting recipes are required for this.