Renewable resource

A renewable resource is a resource that can be recreated indefinitely without exploiting glitches (as opposed to a nonrenewable resource). While running out of resources isn't likely to be a factor due to practically infinite (and still quite vast in theory) map generation, this is a list of resources that can be produced over and over without having to explore for more. However, running out of resources can be a bigger issue on Superflat worlds, where resources are less plentiful.

The listed fully renewable products are items which can be crafted or smelted using only renewable resources. Note that TNT and arrows are crafted from a combination of renewable and non-renewable resources (sand and flint).

Fully renewable resources

These resources do not require any nonrenewable items in order to be collected.

Resource	Fully renewable products	Method
Arrows	—	Dropped by killed skeletons and traded by villager farmers.
Beef		Dropped by killed cows and mooshrooms, and traded by villager butchers
Blaze Rods		Dropped by killed blazes.
Bottle o' Enchanting	File:XP orb animation.gif	Experience orbs are dropped by mobs that are killed by the player. Ore blocks have a chance of dropping experience orbs when mined. A Bottle o' Enchanting creates experience orbs when thrown and may be obtained by trading with villager priests.
Bones		Dropped by killed skeletons.
Bows		Rarely dropped by killed skeletons. Can also be crafted by sticks and string.
Cactus		Will grow to 3 blocks high and can be trimmed or replanted. Must first be found in the world. Will continue to grow even if the sand block is used again.
Chicken Eggs		Dropped roughly every 5-10 minutes by living chickens. Can be thrown to spawn more chickens.
Cobblestone and Stone	Stone BrickStone Bricks SlabPowered Minecart	Created by letting lava flow over or against water.
Cocoa Beans		Dropped by destroyed/decayed jungle leaves, and can be planted on the side of jungle logs.
Crops		Harvesting crops may produce seeds, which can be used to produce more crops. Seeds can also be harvested from Tall Grass.
Chainmail Armor Chain Armor HelmetChain Armor ChestplateChain Armor LeggingsChain Armor Boots	—	Obtained by trading Emeralds to Villager blacksmiths.
Diamond Armor	—	Obtained by trading Emeralds to Villager blacksmiths.
Diamond Tools	—	Obtained by trading Emeralds to Villager blacksmiths.
Ender Pearls Enderpearl		Dropped by killed endermen.
Emerald	Emerald Block	Obtained by trading renewable items to Villagers, such as raw chicken. These can be used to buy other things from villagers, such as Chainmail Armor, by using emeralds obtained from selling a villager renewable items.
Experience Orb File:XP orb animation.gif	—	Dropped by any mob killed by the player except for villagers, all golems, and baby animals. Also dropped by other players on SMP, if they have collected any orbs, who respawn upon death.
Feathers		Dropped by killed chickens
Fish		Obtained by fishing using a Fishing Rod.
Flint and Steel	—	Obtained by trading Emeralds to Villager farmers.
Flowers FlowersFlowers		Can occasionally spawn when Bone Meal is used to generate patches of Tall Grass. Roses are sometimes dropped by killed Iron Golems.
Ghast Tears	—	Dropped by killed ghasts.
Glass		Obtained by trading Emeralds to Villager librarians.
Glowstone Glowstone (Block)	Glowstone (Dust)	Obtained by trading Emeralds to Villager priests.
Gold Nuggets and Gold Ingots	Gold (Block)Gold SwordGold PickaxeGold ShovelGold AxeGold HoeGold HelmetGold ChestplateGold LeggingsGold Boots	Dropped by killed Zombie Pigmen, ingots as a rare drop of Zombie Pigmen. In very rare instances, Zombie Pigmen can spawn in the overworld.
Gold Swords and Gold Helmets Gold SwordGold Helmet	—	Rare drop of killed Zombie Pigmen.
Gunpowder		Dropped by killed creepers and ghasts.
Huge Mushroom Huge MushroomsHuge MushroomsHuge Mushrooms	MushroomsMushrooms	Using Bone Meal on normal mushrooms will grow them into Huge Mushrooms (if there is enough space), which can then be broken to get more of the normal mushroom. With the Silk Touch enchantment though, the Huge Mushroom blocks themselves can be collected. A priest, during trading, can sometimes offer to enchant something. Silk Touch is obtainable by trading. http://www.minecraftwiki.net/wiki/File:2012-08-02_21.45.38.png
Ice		Water source blocks in a tundra or taiga will turn into ice over time. With the Silk Touch enchantment, the Ice blocks can then be collected. A priest, during trading, can sometimes offer to enchant something. Silk Touch is obtainable by trading. http://www.minecraftwiki.net/wiki/File:2012-08-02_21.45.38.png
Ink Sacs		Dropped by killed squid.
Iron Ingots Iron (Ingot)	Iron (Block)Powered MinecartStorage MinecartRailsMap (Item)	Dropped by killed Iron Golems and rarely dropped by killed zombies.
Iron Armor	—	Obtained by trading Emeralds to Villager blacksmiths. Helmets also rare drop of zombies.
Iron Tools	—	Obtained by trading Emeralds to Villager blacksmiths. Swords and shovels also rare drop of zombies.
Leather		Dropped by killed cows and mooshrooms.
Magma Cream	—	Dropped by killed magma cubes.
Melon Seeds		Melon Seeds are only found in Abandoned Mine Shafts. They can be renewed once grown by breaking a melon stem, or crafting them from melon slices.
Milk		Obtained by milking cows or mooshrooms with a bucket.
Mushrooms MushroomsMushrooms	Huge MushroomsHuge MushroomsHuge Mushrooms	Using Bone Meal on normal mushrooms will grow them into Huge Mushrooms, if there is enough space, which can then be broken to get more of the normal mushroom. Normal mushrooms also spread slowly on their own. Also, mooshrooms can be sheared for red mushrooms or milked for Mushroom Stew, which can also be crafted with a bowl and both mushrooms.
Music Discs Music DiscsMusic DiscsMusic DiscsMusic DiscsMusic DiscsMusic DiscsMusic DiscsMusic DiscsMusic DiscsMusic Discs	—	Get a skeleton to kill a creeper with its arrows.
Nether Wart Nether Wart Seeds	—	Harvested from fully grown nether wart.
Obsidian		Entering a Nether Portal for which there is no matching exit will generate 14 free blocks of obsidian (and 4 more "ledge" blocks if the portal is formed in mid-air). Only mining the corners (and "ledges") will keep the portal active. Another way to generate obsidian is by using a bucket to "form" build a portal and mining the counterpart as listed. Each time entering an End Portal will generate a 5x5 platform of obsidian at the same position. In other words, the obsidian will be "refilled" if mined.
Pork		Dropped by killed pigs. Cooked Porkchops can be traded by villagers.
Pumpkin Seeds Pumpkin seeds	Jack-O-Lantern	Pumpkin Seeds are found in Abandoned Mine Shafts. You can also get seeds from putting a pumpkin in a crafting slot or by breaking Pumpkin Stems.
Raw Chicken		Dropped by killed chickens. Cooked also traded by villager farmers.
Redstone Dust	Map (Item)	Obtained by trading Emeralds to Villager priests.
Rotten Flesh	—	Dropped by killed zombies and Zombie Pigmen.
Saddles	—	Obtained by trading Emeralds to Villager butchers.
Saplings and Trees SaplingSapling SpruceSapling BirchSapling Jungle	WoodWood (Pine)Wood (Birch)Wood (Jungle)Red AppleLeavesLeaves (Pine)Leaves (Birch)Leaves (Jungle)Wooden PlankWooden Plank (Pine)Wooden Plank (Birch)Wooden Plank (Jungle)Wooden StairsWooden Pressure PlateJack-O-LanternTrapdoorLaddersFenceFence GateWooden DoorRailsSignStorage MinecartCharcoal (Item)Bed Gold SwordGold PickaxeGold ShovelGold AxeGold Hoe	Trees can be grown from saplings placed on lit dirt; breaking a leaves block has a 5% chance of giving a sapling. See tree farming. Charcoal can be produced by smelting any kind of log. Leaves can be obtained by harvesting with shears.
Slimeballs		Dropped by killed slimes.
Snowballs	Snow (Block)	Snow is replaced whenever it snows, and is also produced by Snow Golems.
Spider Eye		Dropped by killed spiders.
String	Bed	Dropped by killed spiders.
Sugar Canes	Map (Item)	Will grow to 3 blocks high and can be trimmed or replanted. Must first be found in the world.
Tall Grass		Bonemeal being used on grass blocks plants tall grass on the ground. To harvest tall grass, one must also use shears made from iron.
Vines	—	Found on swamp trees, jungle trees, and on terrain and caves in jungles. When attached (hanging), they grow naturally if there is open space below. To harvest vines, one must also use shears made from iron. They also generate as part of player-made jungle trees.
Water Bottle		Bottles can be crafted using glass, traded by librarians. With redstone and glowstone bought from priests, extended potions and level II potions can also be brewed renewably.
Water Bucket		Two water spring blocks in the appropriate pattern produce a third; see water for details.
Wool	Bed	Obtained by killing sheep (or shearing and regrowing as of 1.1.0), crafting 4 strings dropped by spiders, by breeding two sheep which will result in a child with the same color of wool as the parents, or by using shears on sheep. Six of the shown colors (white, light gray, gray, black, brown and pink) occur naturally in sheep; green, lime, red, orange and yellow wool require renewable dyes to produce.

Renewable, but require nonrenewable resources

These resources can be made infinitely, but require one use of a nonrenewable items/resources.

Resource	Fully renewable products	Method
Wool - Blue, Light Blue, Cyan, Purple, and Magenta	Bed	Baby sheep will maintain the color of one of their parents (the one with the lowest internal ID). Killing a colored sheep will drop one block of colored wool, however since 1.1.0, use of regrowth is also renewable. However, one use of the respective dye, containing non-renewable Lapis Lazuli (Dye), is required to color the parent sheep.

Notes

Environment 

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