Before cooking, thoroughly wash and rinse whole okra well with water. 2 After washing, pat it dry completely, using a dry towel. You can then store it in a zip lock bag and leave it overnight in the fridge before using it next day. 3 This will make it less slimy while cooking. 4 This will make okra freeze solid. 5 Add okra immediately to your dish after taking it out from the refrigerator. 6 You can use it as whole or chopped. 7 Always trim the ends before adding it to your dish. 8 Dont allow it to thaw to avoid it from sliming out.