A nice marinated salad. Very authentic tasting. Use a light soy sauce, not dark, for a more delicate flavor. The seaweed in this dish is optional. I usually make it without. The prep time includes the time to soak the seaweed. If you omit the seaweed, prep time goes down to 10 minutes. This is from the book Japanese Cuisine for Everyone from the Quick and Easy series. I got this book 20 years ago, but saw it for sale in an upscale Japanese store just the other day.