Blanched cowpeas have a brighter color and crispier texture, and can take less time to cook. When blanched cowpeas are stir-fried with other dishes, the sauce is more easily absorbed and tastes better. Also, blanched cowpeas are easier to store. When blanching, bring the water in the pot to a boil, then add the washed cowpeas, then turn the heat up to high and then reduce the heat and continue to cook for about 5 minutes.