{
  "parent": "twilightforest:alt/root",
  "criteria": {
    "smoking_block": { "trigger": "minecraft:inventory_changed",    "conditions": { "items": [{ "item": "twilightforest:fire_jet", "data": 0 }] }},
    "fire_swamp":    { "trigger": "twilightforest:has_advancement", "conditions": { "advancement": "twilightforest:alt/biomes/fire_swamp"       }}
  },
  "requirements": [
    [ "smoking_block", "fire_swamp" ]
  ]
}