Yellow Adobe Stairs are pale yellow building-blocks cut into an L-shape.
Usually placed as stairs they will smooth the player-character's movement up and down gradients so no jumping is needed. They can be placed as projections of walls or for other purposes too when being rotated by pressing and holding R (as the default key) while moving the mouse.
Yellow Adobe Stairs can be crafted in your Crafting Menu (default key "Q"), but only after the crafting recipe has been unlocked.
To unlock the crafting recipe for Yellow Adobe Stairs, you will have to craft Yellow Adobe Walls and to process Yellow Adobe Slabs.
The crafting recipe for Yellow Adobe Wall is unlocked by finding the rare Recipe for it in a Treasure Chest or maybe obtain it from a Thing that spawns on corrupted blocks.
8 Yellow Adobe Walls each can then be crafted with 2 (blocks of) Adobe Bricks, 4 blocks of any kind of Canyonstone (like Ruddy Canyonstone, Dark Canyonstone or Canyonstone), plus 2 Stone Rods made of Stone, Limestone or Bedrock in a Processor, 1x Melted Wax made of Beeswax in a Forge or found in Treasure Chests and 1 Yellow Pigment made from Yellow Flowers (from Cragwood trees or Wood Treasure Chests) in a Processor.
Additionally to that you will also have to create Yellow Adobe Slabs from blocks of Yellow Adobe Walls by simply putting them into a Processor. No crafting recipe has to be unlocked for that. To craft 4 (blocks of) Yellow Adobe Stairs at once, you'll need
- 2 Yellow Adobe Slabs made of Yellow Adobe Wall in a Processor
- 1 Stone Rod made of Stone, Limestone or Bedrock in a Processor
- 2x Melted Wax made of Beeswax in a Forge or looted from Wood Treasure Chests or Stone Treasure Chests
Since R42 in May 2017, inner and outer corners blocks can be created for these stairs too by putting them into a Processor. No crafting recipes are required for this.