Mine cobblestone with a pickaxe
Smelt cobblestone in a furnace to make stone
Smelt stone again in a furnace to make smooth stone
Open a crafting table
Place 3 smooth stone in a horizontal row
Collect the smooth stone slab from the result slot
Mine cobblestone with a pickaxe
Smelt cobblestone in a furnace to make stone
Smelt stone again in a furnace to make smooth stone
Open a crafting table
Place 3 smooth stone in a horizontal row
Collect the smooth stone slab from the result slot