I like fish. I don't eat it as much as I used to, but when Sockeye salmon season rolls around it's hard to resist!
So I was excited to see Saveur magazine's March issue include a short essay on the flavor characteristics of fish - and what makes one fish taste differently from another."More often than not, what we perceive in varying measure as a "strong" or "mild" taste in a fish is partly a function of decomposition: an amalgam of odor and flavor compounds that comes from the buildup of amino acids (most notably, a malodorous compound called trimethylamine), ammonia, fats, and other organic substances in the flesh of a fish after it dies."
- Francis Percival, chef, fishmonger, and writer based in London.Mr. Percival says that saltwater fish accumulate more fishy-tasting amino acids than freshwater fish - which they use to counterbalance a salty ocean environment.
And that the fat in fattier fish (herring, salmon), lends a lot of flavor if the fish is fresh, but because it's mostly the unstable polyunsaturated kind, begins to break down (goes rancid) very soon after a fish dies.
And that the flesh of bottom feeders (catfish, carp) often taste of the mud and algae present in the water where they lurk.