In Japan sunomono is often eaten as part of Japanese meals in different variation. Okra became popular in Japan in the late 20th century and before that it was hardly ever seen or eaten. Now, you see okra in many recipes in Japan. Wakame seaweed is often used in miso soups along with tofu pieces and can be purchased in bags or refrigerated bags. My original recipe indicated 40 gram of wakame but I've since decided to change this to reflect less wakame in the recipe. If you like wakame to dominate this taste, please use higher amount.