The Pearl River Bridge Brand Vinegar Sweetened is produced with mutiple spices with traditional technique. No preservative, No favor enhancer, No artificial coloring. So it is suit for the pregnant woman. It can be used as an sweet and sour sauce. When preparing sour pig’s knuckles, it’s recommanded to mix use of Premium Sweeten Vinegar and Sweeten Vinegar to balance the sweetness and sourness, and it also soften the texture.