The way to preserve live blue crabs for 10 days is to put them in a crisper box and freeze them in the refrigerator.

When the blue crabs are bought, their legs are tied. If you want to store the blue crabs for about 10 days, you can put them directly in a foam box or any clean box, and then After adding some water, just put the blue crabs in the refrigerator to refrigerate. Generally speaking, the optimal growth temperature of blue crabs is 5 to 18°C. Too high or too low temperature will affect the growth of blue crabs. In terms of humidity, maintain a humidity of 70 to 90. You can cover the container with a damp towel or sponge to maintain a certain humidity.

If the box is a little dry, you can pour some water on the blue crabs every day to keep the blue crabs moist. In fact, to preserve blue crabs for a long time, you can divide them into different containers. The number of blue crabs in each container should be moderate to avoid overcrowding. The advantage of splitting is that it can reduce fights between blue crabs and extend their survival time. At the same time, the packed containers should be stored in the freezer of the refrigerator to extend the shelf life of blue crabs.

Things to note when selecting blue crabs

1. Look at the crab shell

When buying blue crabs, you can lift the blue crab up and observe the serrations of the crab shell under backlight The top position of the shape should preferably look opaque, which means the crab meat inside is relatively full; if obvious light transmission can be seen, it means the crab meat inside is sparse. Next, focus on the color of the back of the crab shell. Blue crabs with black-green shells are preferred. Such blue crabs usually have thicker crab meat. If the back of the crab shell is yellowish, it means there is not much crab meat. The body is thinner.

2. Look at the crab navel

When choosing blue crabs, the belly button of the crab is also an area that we need to pay attention to. It mainly depends on whether the crab navel is protruding or concave. If the belly button is protruding, the blue crabs are generally full of fat and fat; on the contrary, if the belly button is concave, it means that there is less fat and thin meat inside, and there is insufficient fat, so the taste will naturally be bad.

There is also a saying about eating crabs, called nine females and ten males, which means that crabs should be eaten according to the season. September of the lunar calendar is suitable for eating female crabs with a lot of crab roe, and October of the lunar calendar is suitable for eating male crabs with a lot of crab paste. To determine whether the blue crab in your hand is a female or a male crab, you can tell by looking at the belly button. Male crabs have a raised thin triangular lid at their navel, while female crabs have a wide and slightly flat lid at their navel.