Pour the tomato sauce using a strainer, bring to a boil, and then lower the heat to simmer for 10 minutes. Then, using a strainer add the shrimp broth, stir in the shrimp and gently simmer for 5-7 minutes, depending on the size of the shrimp. The shrimp will be a light orange color but still look firm; do not overcook or the shrimp will have a rubbery texture.