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# Factorio Prototype Docs Version 2.0.7

## ResearchIngredient :: {ItemID, uint16} Example code

Defines the amount of an item required to research one unit of a technology. The first member of the tuple is the name of a ToolPrototype and the second is the amount. Amount must not be 0.

## Example

    {"automation-science-pack", 1}

Type used in

- TechnologyUnit::ingredients