Peel and devein shrimp, retaining tails, if desired. Set aside.
In a large pot, sauté onion and garlic in oil until tender and golden. Add broth. Wash, seed and chop chilies; add to broth and simmer 20 minutes. Season with cumin, salt and cayenne.
Add shrimp; simmer 2 or 3 minutes until shrimp are cooked.
To serve, crumble a few tortilla strips into soup bowls. Pour hot soup over, dividing shrimp equally among the bowls. Top with a few tortilla strips, cheese and cilantro. Serve with warm corn tortillas.
Source: Ocean Garden