How to display nutritional information?

Just wrote a little howto on that: http://tech.cbjck.de/wp-plugins/rpr/documentation/users-documentation/use-nutritional-information-on-your-recipes/

Please note that in the current version 0.7.9 nutritional information will only be displayed if all fields are given. Release 0.7.10 will change this. I plan to release it this week.