hello,

I've just installed Odoo 9 and the POS restaurant module and would like to use in a beer pub, but unfortunately I am unable to find out how could I set the system up to use and handle different units for a product.

The case:

We buy draft beer in 20/30/50 litres kegs and we sell the beer in 0,3 L and 0,5 L mugs.

My question is: is it possible to stock the beer in litres (30 L in) or in dl (300 dl ) and sell it _through POS_ as small (0,3L) or as a large (0,5) beer with one click which will decrease our stock as expected.

I've tried to create a product "xy beer large" and "xy beer" (not to sell) and configure "xy beer" as a part of "xy beer large" in BOM but when I tried to sell "xy beer large" in POS, it didn't decreased our stock of "xy beer".

Other possible solution is to stock "xy beer" in dl and sell 3 * "xy beer" when a small beer is boughtm but it seems to be a bit messy for me.

There should be a standard solution to do it as selling draught beer/cider/wine/etc in a restaurant is relatively common thing. 

Could someone please hepl with this?

Thanks!