{
  "_comment": "Item sources that Minecraft decides in code, so no data file shows them. Each entry: item, how (shown in the guide), needs (list of groups; each group is satisfied by any one of its keys: item:<id>, mob:<id>, block:<id>). Keep this list short and add only well-known mechanics; Phase 4 sources (ore veins, KubeJS recipes) go in an --extra file instead (see docs/field-guide.md).",
  "sources": [
    {"item": "minecraft:emerald", "how": "Trade with villagers", "needs": [["mob:minecraft:villager"]]},
    {"item": "minecraft:milk_bucket", "how": "Milk a cow or goat with a bucket", "needs": [["mob:minecraft:cow", "mob:minecraft:goat", "mob:minecraft:mooshroom"], ["item:minecraft:bucket"]]},
    {"item": "minecraft:egg", "how": "Laid by chickens", "needs": [["mob:minecraft:chicken"]]},
    {"item": "minecraft:white_wool", "how": "Shear a sheep", "needs": [["mob:minecraft:sheep"], ["item:minecraft:shears"]]},
    {"item": "minecraft:honeycomb", "how": "Shear a full bee nest", "needs": [["block:minecraft:bee_nest", "block:minecraft:beehive"], ["item:minecraft:shears"]]},
    {"item": "minecraft:honey_bottle", "how": "Use a glass bottle on a full bee nest", "needs": [["block:minecraft:bee_nest", "block:minecraft:beehive"], ["item:minecraft:glass_bottle"]]},
    {"item": "minecraft:turtle_scute", "how": "Dropped when a baby turtle grows up", "needs": [["mob:minecraft:turtle"]]},
    {"item": "minecraft:water_bucket", "how": "Fill a bucket with water", "needs": [["item:minecraft:bucket"]]},
    {"item": "minecraft:lava_bucket", "how": "Fill a bucket with lava", "needs": [["item:minecraft:bucket"], ["block:minecraft:lava"]]},
    {"item": "minecraft:obsidian", "how": "Pour water on a lava source", "needs": [["item:minecraft:water_bucket"], ["block:minecraft:lava"]]},
    {"item": "minecraft:dragon_breath", "how": "Collect the Ender Dragon's breath with a glass bottle", "needs": [["mob:minecraft:ender_dragon"], ["item:minecraft:glass_bottle"]]},
    {"item": "minecraft:dragon_egg", "how": "Left by the first Ender Dragon", "needs": [["mob:minecraft:ender_dragon"]]},
    {"item": "minecraft:pumpkin_seeds", "how": "Craft from a pumpkin", "needs": [["item:minecraft:pumpkin"]]},
    {"item": "minecraft:mud", "how": "Use a water bottle on dirt", "needs": [["item:minecraft:glass_bottle"]]},
    {"item": "minecraft:ominous_bottle", "how": "Dropped by raid captains", "needs": [["mob:minecraft:pillager"]]}
  ],
  "concrete_from_powder": true
}