Heat oven to 300 degrees. On a rack, place tomato halves, with one piece of garlic and thyme. Sprinkle salt and pepper. Drizzle with olive oil and roast until soft.
Blend with immersion blender sherry vinegar, tomato taste, cream, extra thyme sprigs, chicken stock, salt, balsamic vinegar, and sugar to the proper consistency and strain at least two times. Adjust flavor with vinegar and sugar.
Garnish with crème fraîche, olive oil and fresh herb of choice.