Recipes are used for items you sell on the till, but cannot physically count,  

Some common examples are:
Glasses of Wine -- you count the bottle not the small glass of wine.
Cocktails -- you count the spirits, the juices, not a finished cocktail.

Recipes tell the system to not reduce the stock of the item sold but rather reduce the individual ingredients that the product it is made up of.

Recipes are set in the 'Stock and Recipes' section of the product page , setting a recipe assumes you have already configured Units of Measure 



Example 1:
I have a Red House Wine which I buy by the bottle in 750ml, I sell this as a bottle and I sell it as a 125ml & 175ml Glass
Check List:
1) House Wine Red Bottle is setup on the till as an item
2) House Wine Red Glass 125ml is setup on the till as an item
3) House Wine Red Glass 175ml is setup on the till as an item
4) The units of measure are set for the red house wine bottle item as
Stock Unit = Bottle 750ml
Sales Unit = Bottle 750ml
5) The Sales unit and Stock unit of measure for the 125ml and 175ml glass of red house wine can be left at ‘Each’
6) A recipe is added for the 125ml red house wine glass item as
Ingredient – House Red Wine Bottle
Quantity - 0.16
7) A recipe is added for the 175ml red house wine glass item as
Ingredient – House Red Wine Bottle
Quantity - 0.23

The Ingredient Quantity should always be set as a percentage of the Ingredients ‘Stock Quantity’ so in the examples above a 125ml glass of wine is 0.16 of a 750ml Bottle and a 175ml glass of wine is 0.23 of a 750ml Bottle.
 
When you do the count and talk about onhand quantities, you are referring to the red house wine bottle and in bottles e.g. 7.25 would mean 7 and a quarter bottles.
 
 
Example 2:
I have a Beer which I buy in 11 Gallon Kegs, I sell this as Pints and as Half Pints
Check List:
1) 11 Gallon keg of Beer is setup on the till as an item
2) Pint of Beer is setup on the till as an item
3) Half Pint of Beer is setup on the till as an item
4) The units of measure are set for the Keg of Beer item as
Stock Unit = 11 Gallon Keg
Sales Unit = 11 Gallon Keg
5) The Sales unit and Stock unit of measure for the Pint and Half Pint of Beer can be left at ‘Each’
6) A recipe is set for the Pint of Beer item as
Ingredient – 11 Gallon Keg
Quantity – 0.011
7) A Recipe is set for the Half Pint of Beer item as 
Ingredient – 11 Gallon Keg
Quantity – 0.005
 
The Ingredient Quantity should always be set as a percentage of the Ingredients ‘Stock Quantity’ so in the examples above a Pint of Beer is 0.011 of a 11 Gallon Keg and a Half Pint of Beer is 0.005 of a 11 Gallon Keg.

When you do the count and talk about onhand quantities, you are referring to the 11 Gallon Keg of beer and in kegs e.g. 2.25 would mean 2 and a quarter 11 gallon kegs
 Example 3:
I have a gift set Which comprises of Multiple individualy sold products (for this example we call them ‘Candle 1’ ‘Candle 2’ and ‘Candle 3’)
Check List:
1) Gift Set is setup on the till as an item
2) Candle 1 is setup on the till as an item
3) Candle 2 is setup on the till as an item
4) Candle 3 is setup on the till as an item
The Units of Measure are setup for the Gift Box as
Stock Unit: Each
Sales Unite: Each
5) The Sales unit & stock unit of measure for the Candle 1, Candle 2 and Candle 3 can be left as ‘Each’
6)A Recipe is set for the Gift Box as
Ingredient – Candle 1
Quantity – 1
Ingredient – Candle 2
Quantity – 1

Ingredient – Candle 3
Quantity - 1
The Ingredient Quantity should always be set as a percentage of the Ingredients ‘Stock Quantity, so in the example above the Candles have stock quantitys of ‘Each’ so the ingredient quantity can be set as one , 

If the Candles had Stock Quantities of ‘Case 12’ , the Ingredient Quantity would be set as 0.833 , or 1/12 of a case.
 
When you do the count and talk about on hand quantities, you are referring to the Stock Quantity of the Individual Candles , so in the example above  3 x Candle 1 , would mean 3 individual Candle 1’s 

Common Stock Quantities

125ml of a 750ml Bottle - 0.16666

175ml of a 750ml Bottle - 0.23333

250ml of a 250ml Bottle - 0.33333

25ml of a 700ml Bottle - 0.03571

35ml of a 700ml Bottle - 0.05

50ml of a 700ml Bottle - 0.07142

25ml of a 1ltr Bottle - 0.025

35ml of a 1ltr Bottle - 0.035

50ml of a 1ltr Bottle - 0.05

to calculate the stock quantity to use divide the quantity sold by the quantity counted, so for example if you count an item in 'bottles of 6' and sell it as bottle of 1 you would devide 1/6 =0.167