5 Sand and 4 Brick make one Coke Oven Brick of which you need 26.
It is then built in a 3x3 cube with the central block being a air space - once the last block is down the middle block of each side face will turn into a grill.
Its on the list of Things to loot - i decided to make a alchemy bag to facilitate the endeavor 1st (that was its own comedy of errors)Holy crap! I once discovered that ship in my YogBox world! Then I uh, looted it of all it's iron, wool, obsidian, beds, and other stuff before I burned it down.
It involved the sacking of a pirate ship and the discovery of a CARuin that contains a Blaze, Cavespider and Silverfish spawner