Chop the cabbage as fine as you have thepatience for.
In a large bowl, combine the cabbage, green onion, parsley, celery and eggs. Toss to combine. Add the mustard and mayonnaise and stir together. Taste to see where it stands; add more mustard or mayonnaise if you wish. Season with salt and pepper. Finish with a generous dusting of poppy seeds and mix the whole thing together.
Store covered and refrigerated for up to 3 days.