Grab text nodes from node only, not it's children's text

Grab text nodes from node only, not it's children's text

So I have the following xml:
<ingredient name="rice"><us>1 cup</us><metric>250 mL</metric> of uncooked Korean rice</ingredient>

I want grab only the "of uncooked Korean rice" part.  I tried to use text() but it would grab the text from inside the "us" and "metric" element.
Thanks for any help.