New cocktail

AirplaneGirl threw down the gauntlet when I mentioned I wanted to make a new cocktail. She suggested muddled green zebra tomato as a ingredient. Here's the best I could come up with:
Ingredients:

• 1 green zebra tomato
• 1 oz. vodka (I used celery-peppercorn from Modern Spirits)
• 1 oz. dry vermouth (I used Cinzano Bianco)
• a dash of sherry

Muddle the tomato, add ice, then the liquor. Mix.