reciProfity allows you to have as many products per item as you need.
For example you may purchase Greek Yogurt from one vendor in 3 different sizes. All three of these products can live under the item Greek Yogurt.
Only one of those products at a time will be used in recipes.
You can, however, count all three products.
In the On Hand report we add up the counts for all three products, and total the costs for all three products and use that for the total cost of that item.
If you only have one product per item then you will see the total on hand for that one product and the cost is the cost for that item times the total on hand.