Composter

A composter is a block which converts crops and plants into bone meal.

Natural generation
Composters can generate in farms in villages.

Usage
Composters can be used to produce bone meal. To do so, the player must any of a selection of items on the composter. The composter can also be used to recycle unneeded plant items. When an adjacent comparator is facing away from the composter, a comparator signal strength of up to 8 is emitted depending on the fullness of the block.

Composting
The composter can be filled with compost, which is done by adding compostable items to it. When successfully adding an item, a green particle appears. See the table below for all supported items. These items have different levels of compostability. The higher the percentage of an item, the more likely it is for that item to add another layer of compost to the block when used on it. Each layer of compost has a podzol-like appearance. When the composter reaches the 7th layer of compost, the compost will change appearance indicating that bone meal can be collected by the composter a final time.

The following table shows the items that can be used in a composter, the percent chance for an item to add a level of compost, and the average number of items needed to fill a composter:

Hoppers
Composters can interact with hoppers by placing a composter on the upper side of a hopper and producing bone meal from the composter, which will cause the bone meal to be collected into the hopper automatically (see for more details about hopper-specific mechanics). Hoppers cannot be drawn into the sides of composters.

Hoppers can also push items into the composter from above.

Changing villager profession
If a village has a composter but no farmer villager, any resident villager who has not already chosen a job site block has a chance to change their profession to farmer.

Redstone component
A composter can act as a power source for a redstone comparator. With a composter behind it (either directly, or separated by an unpowered solid block), a comparator will output a signal strength proportional to how full the composter is: 0 for empty, 1 for one-seventh full, 2 for two-sevenths full, 3 for three-sevenths full, 4 for four-sevenths full, 5 for five-sevenths full, 6 for six-sevenths full, 7 for completely full but the bone meal is not ready to collect, 8 for completely full and the bone meal is ready to collect. However, if there is a block between the composter and comparator, the comparator will not immediately update.

Fuel
A composter can be used as fuel in a furnace to smelt 1.5 items.

Gallery
Kompostér Komposter Composteur 퇴비통 Kompostownik Компостер ถังหมักปุ๋ย 堆肥桶