e.  RecipeProcesses and RecipeExchanges can be combined into one recipe if desired.  A RecipeFlow through its Action defines how it will affect the (resource of the) ResourceSpecification.  If it defines a ProcessSpecification stage, then the flow expects a resource at that stage of production.</p>
<h4 id="vfrecipe">vf:Recipe</h4>
<p>A Recipe defines a way to easily tie all the RecipeProcesses needed to create an output.  If your Recipes have only one RecipeProcess, you may not need Recipe.</p>
<h4 id="vfre