Interesting, I opted for crushed celery stalk in place of the seed and horseradish last time I made one but then I was working with the distinctive taste of Ultra Death.
Wife comes back from store with watermelon vodka, orange juice, and horse raddish. I say where is the tomato juice and I can't make marys with water melon vodka. Oh well maybe next time. STILL JONESING FOR MARY