Before you set up any recipes you will need to add some ingredients.
Unless the ingredient is also a product that you will sell directly via the EPOS you will need to add these in the Ingredients category. You will see this on the far right when you first go into products.
By default you will have two categories in the ingredients folder, to add either wet ingredients used for by the bar, or dry ingredients used by the kitchen. Click on the category that you wish to add an ingredient to.
Once you are in the wet or dry category, you just click on the add product button to add your ingredient.
Type the name of the ingredient you are adding (in this example, Potatoes) and press "Add new product"
You don't need to give your ingredient a price as you won't be selling it on its own. Instead you can go straight to the stock tab.
For potatoes we might set the measurement as "kg", the order unit as "sack" and the order unit size as "2", assuming we get 2kg of potatoes in a sack.
The cost price will be the price for a sack of potatoes.
For more information on setting stock fields see Product Stock Settings.
Once you have entered all of your ingredients, you can add them to a recipe.