I see it more like this..
this is a no Roux sauce mainly butter..
So melt 2 stix butter
add 1 chopped onion, 1 choped bell pepper, 1 "bud " of garlic, 2 stalks celery.
1 can diced hot Tomatoes.
Simmer on low for 4 hours?! Wow, I have a very heavy enamaled Iron pot. and I asked Big Al about this. He Responded.." About the time it takes to watch a Alabama football game"
I'm thinking, by then this will be just gone veggies in oil.
Then add can of soup, spices, Thyme, bay Leaf, and Worstershire..
Then add shrimps like last 10 minutes till done..
Serve over rice.
I think the 4 hours part is excessive.
Eric, Austin Tx.
ps. 2 quarts of shrimp, I think is about 2 pounds.