Adding new Food items to Recipes?

Hi,

I am new and like to add new recipes.  I have products I use such as xylitol or erythritol.  I can add these to my daily intake BUT I would like to add these to a recipe and cannot.  I copy the code after I add it (and tag it to my personal items) but it does not work. 

 Is adding a new baking or cooking item that is not in the "regular" database something I will be able to do in the future so I can incorporate it into my recipes?

 Thank you...

 

Anyone?

Second request...need feedback...Can I add new products and then use the [code] to add to my recipe?