heat oil in a large pot, medium. add shallots + garlic + chorizo stir occasionally, 6 mins. remove cooked chorizo + ½ of garlic shallot mixture from pot, set aside. pour broth in pot, bring to boil. add mussels + clams + lemon juice, cover. reduce heat, medium low. steam shellfish, about 10 mins. gently rotate shellfish throughout until all have opened. [discard any unopened ones]
plate into large bowl + top with chorizo + remaining shallot garlic lemon pot juice + thyme + sea salt
optional pairing: steamed green beans + fingerling potatoes