Korean flower crabs (kkotge) are the most popular and well-loved ocean crabs in Korea. They are distinguished for being full of sweet meat and having a soft shell. It’s best if you can find them fresh and live in a Korean market. They also sell them frozen too.
My cookbooks
Which to get? my first book has all the recipes for all the essential Korean pastes and sauces, but my second book Maangchi's Big Book of Korean Cooking has more recipes. Both are best sellers and either one is a good choice if you want to learn Korean home cooking.