Minecraft: How to make a Blast Furnace

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5 Iron Ingots + 1 Furnace + 3 Smooth Stone --> Blast Furnace

This 1.15+ Minecraft item acts just like a Furnace... except the Blast Furnace can cook ore items 2 times fast. (But the catch... only ore)

See Smoker or Furnace for ones that can cook stone or food.