California rolls don't contain real crab. The pink filling is surimi, ground fish mixed with dyes, MSG, and flavor enhancers to fake crab meat's taste and texture. The speaker calls it the hot dog of the sea and warns it's unhealthy.
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If you love eating sushi, you need to know about the hot dog of the sea. This is a fake food that is used to make crab look like it's real and trick you into think you're eating something that you're not. Sarumi is a fish that's heavily processed and made to look like crab meat by adding dyes, by adding sunflower oil, by adding soya beans, vegetable oils, sugar, MSG, monosodium glutamate, and other similar flavor-enhancing compounds like disodium inosinate. Ultimately, when you think you're eating clean with seafood and rice, you're actually eating something that is extremely unhealthy and will make you sick over time. Also, make sure to share this with a friend who loves eating. Eating sushi so they don't make the same mistake as well.