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| Sicence name | Sea urchin/ Sea chestnus/Echinoidea |
| Yellow OrangeDiameter | 5-12cm |
| Weight | 40-100 gram/pc |
| Origin | Vietnam |
| Type | Fresh/Frozen |
| Colour | Yellow Orange |
| Delivery Time | 3-5 days |
| Packing | Vacuum bag with frozen type |
| Tasty | Delicious |

1. These spiky little sea creatures used to be called sea hedgehogs.
2. There are over 200 types of sea urchins but only a small handful are consumed by us humans.
3. The five plates that surround the mouth and the innards are called "Aristotle's Lantern'. This is because Aristotle wrote a book entitled, "The History of Animals". In the book, he describes the mouth a sea urchin looking much like a lantern.

4. Uni is the Japanese name for the edible part of the sea urchin, not the sea urchin itself. In other words, uni refers to the edible orange lobes.
5. These lobes are actually the animal's gonads, which produce roe/eggs. Each sea urchin contains five 'lobes'.
6. Uni is graded based on color, texture, and freshness. The highest grade is a bright yellow/gold (Grade A) with a firm texture and is a some sweetness. Grade B uni is a more muted yellow and has a softer texture and is less sweet. Grade C uni is referred to as 'vana' and is often the parts left over from uni that has broken apart during processing or handling. Obviously, the higher the grade, the higher the price.
7. Most uni that is served to us in better Japanese restaurants is Bafun uni. This is bright orange. Other popular uni used in sushi and sashimi restaurants include Murasaki uni (pictured above) and Aka uni. But the most highly prized uni is that from Chile, which the Japanese just call Chili-uni.

8. Uni is actually very healthy. A 100g portion of sea urchins contains 172 calories and very little fat. The fat is also almost all unsaturated fat. For every 100g of sea urchin, there are only 1.75 grams of polyunsaturated fat. And, we all know that eating polyunsaturated fats in place of saturated fats can help lower your cholesterol levels. Sea urchins also contain omega-3 fatty acids, which can help lower blood pressure and reduce the risk of an abnormal heart beat.
9. In the past, it was believed that sea urchins wee powerful aphrodisiacs
10. Scientists have discovered that uni contains an "euphoria-causing chemical" ingredient (albeit in very small quantities) similar to what you find in marijuana. Said ingredient is a chemical neurotransmitter called an anandamide, also known as arachidonoylethanolamide or AEA. Some say that this is why uni tastes so damned good.

Sea urchin sushi, also known as uni, is a delicacy made from the gonads of the sea urchin. According to Sushi Encyclopedia, this type of sushi is rich and creamy, although it has a strong ocean smell. Sea urchin sushi, as with many other types of seafood, is relatively low in calories and provides some other health benefits that may make it a good addition to your diet. Note that nutritional values may change based on how meals are prepared, so consult product labeling or restaurant servers when in doubt.


1. Low in Calories
Sea urchin sushi is low in calories, with about 34 calories per ounce. This makes it lower in calories than other types of sushi, such as sushi made with salmon, albacore tuna or mackerel. The low calorie content of sea urchin sushi can be beneficial if you are trying to lose weight or maintain your weight, as replacing a higher calorie meal with this sushi can help you create a calorie deficit. The Mayo Clinic recommends aiming for a weight loss pace of 1 to 2 pounds per week, which would mean you'd have to create a deficit of 500 to 1,000 calories daily.
2. Very Low in Fat
Sea urchin sushi is very low in fat. Each ounce has just 1.1 grams of fat, which is the most energy-dense nutrient with nine calories per gram. Low-fat diets may help keep you healthy, and the National Institutes of Health suggests consuming between 25 and 35 percent of your daily calories from fat.


3. Minimal Carbohydrate Content
One benefit of sea urchin sushi that may be relevant to dieters is that this type of sushi contains little to no carbohydrates. An August 2010 study from "Annals of Internal Medicine" suggests that low-carbohydrate diets provide as quick a rate of weight loss as low-fat diets while offering superior reductions in cardiovascular risk factors.
4. Rich in Protein
Another health benefit of sea urchin sushi is that it derives most of its calories from protein. Each ounce of sea urchin sushi contains 3.2 grams of protein, which is more than half of what an egg contains. Protein is an essential nutrient that provides your body with amino acids, the building blocks of muscle. Protein is also filling, which can benefit dieters.








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