Chop the lobster shells into medium size pieces and place in a stock pot over medium-high heat.
Once the shells have turned red, add the mirepoix and sauté until onions are translucent.
Add the garlic and continue stirring until it is fragrant.
Add tomato paste and sauté for a couple of minutes to begin caramelizing the paste.
Add the brandy and cook until the alcohol smell is gone.
Add the white wine and deglaze the stock pot.
Next add the chicken stock, and herbs, and stir well to combine. Bring to a boil and immediately reduce to a low simmer.
Simmer for 45-60 minutes.