Shrimp in Cajun Beer Broth

Having purchased large head-on shrimp, I wanted to do something other than steam them. I decided to cook them in a broth to take advantage of the extra flavor the heads would lend. My boyfriend loved the broth so much that he practically drank it. We put it over bowls of rice to accompany the shrimp, wishing I had a loaf of garlic bread to dip in it. I used red onion because I had it on hand, but any combination of onion, garlic and/or shallot would be delicious! I think I will saute diced celery with the onion mixture next time and add chopped parsley or cilantro at the end for garnish. Very simple, tasty and ready in minutes!