I want to be able to track inventory of raw ingredients such as flour, sugar, butter etc.

I then want to have set "recipes" for baked goods, such as a "cake", using the ingredients in the inventory, even tracking their batch numbers.

I believe that Zoho's "Composite Items" could be the solution but I cannot work out how to turn the items in the inventory into smaller units.

For example, if the recipe for a cake required 1kg of flour but the stock item of flour received from the supplier is a 50kg bag.

Is the only solution, when making a composite, to enter the quantity as "0.02" of the 50kg of flour? Or is there a smarter way for Zoho to do weights that I am not getting?