Manage juice bottle to sell into per cup

[OY26]

I have a 700ml bottle of juice, and I want to be able to sell it in a 100 ml cup of juice. 

[Hanna]

I’d recommend using the Composite feature for this. You can start by creating the '700ml Bottle of Juice' as an item, just enter the name, price, and cost, and make sure to enable Track Stock. From there, you can enter the total number of bottles currently in stock in the quantity field.

For example, if you have three bottles, enter '3' to represent three individual bottles.

After saving, you can create the 2nd item to be able to manage selling the 100ml item.

For the 2nd item, activate the composite feature and add 700ml bottle as its component. 

In the quantity field, enter 0.143.

Why 0.143?: Since 100ml ÷ 700ml = 0.143 x 7 shots =1 / 1 bottle

So every time you sell 1 glass of juice, 0.143 will be deducted from the bottle stock. This means that if you sell 7 glasses of juice, it will be equivalent to 1 bottle.