I'm making a salad that's quite bitter (endives, radicchio, arugula, with a lemon vinaigrette dressing). Normally this salad has peeled grana padano on top of it, which cuts the bitterness, but my co-diner can't have dairy (or gluten, sadly).
Any ideas for what I could add to a salad like this that would cut the bitterness similarly?
Thanks!