Haste increases mining speed, using one redstone block.The SmelteryThis feature is needed for making tools with metals and alloys. It is somewhat different to its Java equivalent as it doesn't need a fixed shape, but it can still be used that way.GroutThis block is needed to make seared bricks and is crafted with gravel, sand and clay.Seared BrickThis item is used to make Seared Bricks, or major components of the smeltery.