Is it possible in Samba to create a half portion for something. The example I am looking at is that when we serve an alcoholic drink for example a Gin we serve it with half a can of tonic. It is obviously not feasible for me to break down purchasing of tonic into ml as I buy it by the case and most of the time sell it by the can. Samba will not let me put .5 as a measure.
You are talking about two different things. That would not be a portion… that would be part of a recipe. The Gin would include half a can as a recipe. It will track your inventory for half a can for every Gin you sell. You would put the smallest unit of measure that you use in a recipe as your base unit for your inventory item Tonic. So if your smallest unit is half a can you would make this your base unit. You can still purchase by case if you set it up right.
Another way to do it… you can still use inventory item and put it at 1 can as base unit… when you create your recipe you can define the Tonic ingrediant as .5
Portions would be for the actual menu item… so Pancake Supper could have a small portion or large portion each portion would have its own recipe. Portion is used for pricing not for inventory. Recipe and Inventory Items controls the inventory