Handling different products in the same batch

It is not possible to manufacture more than one product or variation at the same time.

If both products are manufactured from the same "source" material (e.g., two different sizes for soaps), an option is to create a component to manufacture your complete source batch and then configure recipes for the different sizes using the proportions of the overall batch. 

This will mean you will only need to maintain a single recipe to produce your batch - your product recipes would only need to refer to the component and the quantity consumed.

Example: I produce a fragrance and package it into two different presentations a 5oz and a 10oz jar. I would create the fragrance as a component with the listed ingredients and then create a product with 5oz and 10oz variations. Each variation recipe would then contain 5oz and 10oz of the batch fragrance.