A deeply aromatic, slow-simmered bone broth perfumed with charred ginger, star anise, and cinnamon, ladled over silky noodles and fresh herbs.
Slice the shallots and quarter the tomatoes.
Heat the annatto oil and fry the shallots until golden.
Add the tomatoes and stock and simmer for 10 minutes.
Season with fish sauce and sugar.
Add the snails and simmer for 5 minutes.
Soften the vermicelli in hot water, divide between bowls, pour over the soup, and top with the dill.