# Bill of Materials ("Recipe" within a raw material)

**URL:** <https://community.breww.com/t/bill-of-materials-recipe-within-a-raw-material/2005>\
**Category:** Ideas & feature requests\
**Created:** [20 January 2023 15:05 UTC](https://community.breww.com/t/bill-of-materials-recipe-within-a-raw-material/2005 "2023-01-20T15:05:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![matthias-seidl](https://community.breww.com/user_avatar/community.breww.com/matthias-seidl/32/1289_2.png) [@matthias-seidl](https://community.breww.com/u/matthias-seidl)\
**Post date:** [20 January 2023 15:05 UTC](https://community.breww.com/t/bill-of-materials-recipe-within-a-raw-material/2005/1 "2023-01-20T15:05:40Z")

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Hello,

Can you create a feature so I can attribute certain raw materials to a stock item which I then can add to a batch?

Example:  
I pour a cupric sulphate agar plate (this is the stock item) which I use for microbiological testing of a batch.  
Within this stock item there is a bill of materials:

- 1x petri dish
- x.x g copper sulphate
- x.x g malt agar
- 1x sterile swab

Then when I add a cupric sulphate plate to my batch just as I would with hops, then all these raw materials listed above would get pulled from stock automatically. This will make it easier to keep an overview, otherwise I have a huge list of raw materials that are not really of interest but necessary to get accurate costings for example.

Kind regards  
Matthias

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**Author:** ![luke](https://community.breww.com/user_avatar/community.breww.com/luke/32/3636_2.png) [@luke](https://community.breww.com/u/luke)\
**Post date:** [21 January 2023 09:41 UTC](https://community.breww.com/t/bill-of-materials-recipe-within-a-raw-material/2005/2 "2023-01-21T09:41:39Z")

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Thanks for the great suggestion, Matthias

Would you ever pre-prepare a larger quantity of cupric sulphate agar, which you’d like to keep “in stock” for use over multiple batches of beer, or would this always just be made when required?

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**Author:** ![matthias-seidl](https://community.breww.com/user_avatar/community.breww.com/matthias-seidl/32/1289_2.png) [@matthias-seidl](https://community.breww.com/u/matthias-seidl)\
**Post date:** [23 January 2023 07:07 UTC](https://community.breww.com/t/bill-of-materials-recipe-within-a-raw-material/2005/3 "2023-01-23T07:07:53Z")

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Hi Max,

I would make more media plates (for 1-2 week) and then use them throughout different batches