Recipe provided by Chef Crusco Catering in Austin, TX Ingredients 1 small White onion – rough chop 1/2 cup Green Onions (green and white parts) – rough chop 1/2 cup Fresh Flat-leaf Parsley – rough chop 1/2 cup Celery – rough chop 2 tbsps. Garlic – rough chop 2 tbsps. prepared Horseradish 2 tbsps. Whole-grain