Almost like cooking...the acid denatures the protein in the fish, making it more palatable but still raw.
The cool part is it "feels" like it's cooked when you chew it, making it alittle more pleasing for those people who don't like sushi.
Me, on the other hand, I'll take a big slice of Otoro any day!!! Expensive, but it's like the foie gras of the marine world.
Later,
Rick
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