This template is used to link to the in-game Recipe Book entry for a recipe. The first argument is the portion of the link after the recipe=. The second argument is the text to display as the link, defaulting to "Link".
Knowing a recipe link requires crafting it first; if you have crafted a recipe not already linked, you can view the html source of this page and search for the name/type pair at the end of each addRecipe() directive.
EDIT: As of the crafting tab UI changes on 23 April 2014, I am unable to figure out how to pop up a specific recipe. The Book of Living Recipes in-game links are also broken - if those get fixed, we can make the same change to this template.