Hey I spent the last 2 months tinkering with a recipe DB and now you come up with a plugin for it :-)
my try can be seen here: http://pacura.ru/food/recipes/sour-cream-cake/ that is a sample recipe. still working on the archive templates for searching and filtering.
I like your plugin though. maybe we can chat and improve your plugin with some ideas?
The main reason I want to chat to you is that I built a lot of my features around custom taxonomies to use this plugin: http://wordpress.org/extend/plugins/query-multiple-taxonomies/ for the search function. it can combine multiple taxonomies for searching, i.e. you simply click on ingredients and it filters the recipes by those ingredients and/or by courses and/or cuisines as they are all custom taxonomies.
How does your plugin handle that? How about searching browsing your recipe DB?
Does the plugin have an external homepage via which I can contact you directly?