Dark Oak Wood is a block that has the log’s bar texture on six sides. To make a Dark Oak Wood, you will need Dark Oak Tree Logs.
Dark Oak Tree Logs
The basic required item to make Dark oak wood is dark oak tree logs. You can find these trees in roofed forest biomes. Use your iron axe to chop the tree down and get at least 4 pieces of dark oak tree logs.
Dark Oak wood
Go to the crafting table and open 3*3 crafting grid. Use the dark wood blocks in four adjacent cells and you will get dark oak wood. Take the dark oak wood into your inventory.