Nagatanien makes one of the best selling brands of chazuke, which is a tea and spice (including nori seaweed) mixture that is stirred with hot water into a bowl of rice to produce a wonderful soup. I have only seen this in Japan, but it is a frequent last item to order for dinner when you are eating out. Really nice and of course you can make it at home also. This product is celebrating 60 years. お茶漬け 永谷園
Photo is a web capture for explanatory purposes, copyright belongs to the company.