Blue Concrete

The Blue Concrete is a hazy blue building-block.

It can be crafted in your Crafting Menu (default key "q"), but only after the according crafting recipe has been unlocked by

• crafting or obtaining an Obsidian Mining Cell from Obsidian (bars), Stone Slabs, Bedrock, Magnetite and Mushrooms
• creating Blue Pigment by putting Blue Flowers from Elderwood-trees into a Processor, or by finding this pigment in Obsidian Treasure Chests or obtaining it from any kind of Keepa
• mining Siltstones from the Stalactite layer, which requires an Obsidian Mining Cell or stronger Mining Cell to be equipped

To craft 8 (blocks of) Blue Concrete at a time, you'll need:

• 1 Blue Pigment made of Blue Flowers from Elderwood-trees in a Processor or found in Treasure Chests
• 1x Melted Wax made of Beeswax in a Forge or looted from Wood Treasure Chests or Stone Treasure Chests
• 4 (blocks of) Siltstone taken from the Stalactite layer with an Obsidian Mining Cell or better
• 2 Globs of Goo (made from Mold in a Processor or looted/harvested from many creatures including Pigsies