Thanks! The ingredient parsing is definitely not 100% accurate (it falls down completely on several sites). That ingredient screen that appears after submitting a url was supposed to be used for error correction. Users can quickly delete and edit ingredients before adding it to their list. You are right though, it does add an extra step before you can add another recipe url.

I'm currently using a naive bayes classifier for the ingredient extraction with some hand-crafted features. There's also an augmenting step that tries to exploit ingredient locality in the recipe doc to pick out ones that might have been initially missed.