Simmering rice wine, rice vinegar, soy sauce, bonito flakes, and seaweed, and  fresh yuzu juice.
Ponzu sauce is a Japanese dressing and marinade that is similar to soy sauce, but has a distinctive tangy, often acidic flavor. Cooks both within Japan and around the world use it in a variety of dishes. Ponzu is a citrus-based sauce used in Japanese cuisine as a marinade or an addition to soy sauce. Ponzu is a traditional Japanese condiment made of seasoned soy sauce flavored with vinegar and citrus juice. AJIPON® is the #1 brand of Ponzu in Japan. Its unique flavor will add extraordinary flavor to your meal. Ponzu is great on seafood & sushi as a topping or dipping sauce, steak, Tofu or pot stickers. Ponzu Sauce, the tangy soy-based sauce, is traditionally made with a citrus fruit and may have been inspired by visitors from Holland during the 17th century. Fresh lemon juice and orange juice give this sauce a citrus snap. 5. Read Reviews (1). Ponzu shoyu and tuna steak. Ponzu (ポン酢) is a citrus-based sauce commonly used in Japanese cuisine. It is tart, with a thin, watery consistency and a dark brown color. Ponzu shōyu or ponzu jōyu (ポン酢醤油) is ponzu sauce with soy sauce (shōyu) added, and the mixed product is widely referred to as simply ponzu. Ponzu is made from simmering rice wine, rice vinegar, soy sauce, bonito flakes, and seaweed, and then adding fresh yuzu juice. This rather unlikely combination of ingredients leads to an intense soy-like sauce that is simultaneously sweet, tart, bitter, and salty. Recipe of the Day: Ponzu Sauce. An all-purpose sauce from Japan, ponzu is the rough equivalent of vinaigrette. But the bottled stuff, which is what you will find in Japanese markets, is to real ponzu as a supermarket brand is to real vinaigrette: a pale shadow.
http://www.wisegeek.org/what-is-ponzu-sauce.htm http://www.thekitchn.com/what-is-ponzu-96554 http://www.mizkan.com/JapaneseProducts/Japanese-Condiments/AJIPON-Citrus-Seasoned-Soy-Sauce-Ponzu.aspx http://www.myrecipes.com/recipe/ponzu-sauce https://en.wikipedia.org/wiki/Ponzu http://www.thekitchn.com/craving-fresh-flavor-5-ways-to-135859 http://dinersjournal.blogs.nytimes.com/2009/02/19/recipe-of-the-day-ponzu-sauce/
what is ponzu made of