Build the Nether portal frame with obsidian
Place lava inside the portal frame area
Use a flammable block or item to catch the lava fire
Wait for the portal blocks to ignite
Remove the lava if needed after the portal activates
Build the Nether portal frame with obsidian
Place lava inside the portal frame area
Use a flammable block or item to catch the lava fire
Wait for the portal blocks to ignite
Remove the lava if needed after the portal activates