Not delicious, because the shrimp have been sized, often in the shrimp there will be a lot of water present, once frozen, shrimp in the water will have liquid directly gasification disappear, which also makes a lot of seasoning will disappear with it, so that the shrimp's freshness declined, the taste will decline, you will be good in advance will also decline in the effect, so if the shrimp have been on the river, it is best not to freeze.