The Yomiuri Shimbun shared a recipe for a Vietnamese-style, pork-based banh mi.
Disparate flavors meld beautifully in a Vietnamese-style sandwich on a French baguette: savory ground pork, sour vinegared vegetables, fresh coriander and more. Chef Masumi Suzuki, who specializes in Vietnamese cuisine, shared her recipe with The Yomiuri Shimbun. It makes a tasty and filling meal just right for a picnic. Source: The Yomiuri Shimbun.
Read more here for the ingredients: http://the-japan-news.com/news/article/0003730616