I'd probably use ground ginger since crystallized ginger isn't really my thing, but I think they would still be amazing!! (beyondthepeel.net)
Examples of proteins crystallized in the presence of Naomi's nucleants are: (moleculardimensions.com)
I love the idea of crystallized ginger in brownies... Trader Joe's dark chocolate covered ginger is one of my favorite things EVER to munch on. (alisacooks.com)