According to Seafood Watch, farmed oysters, which constitute 95 percent of the world's harvest, are considered a "Best Choice" in terms of sustainability. Nutritionally, a trio of these bivalves has only 30 calories and provides more than 100 percent of the Recommended Daily Allowance of zinc and B-12 and a third of the iron requirement. Purists can guiltlessly slurp away on these open-faced mollusks raw or heated over coals until bubbles just begin to appear in their natural juices.
As a child, I first encountered an oyster hidden in a combination basket of Gilda's deep-fried Fisherman's Catch ($12.75). Its soft center contrasted favorably to the flaky cod and crisp calamari tentacles.