The packaged precooked shrimps are fast and easy to prepare. You can eat them once the ice is melted in the refrigerator overnight or thawed in cold water. Eat it cold in salads, wraps, and spring rolls. You can also heat it on a microwavable plate for two to three minutes. Because precooked shrimp is ready to eat, you should toss them in pasta and noodles after everything is cooked.