"Tangy sauce" refers to a sauce that has a sharp or zesty flavor. It usually adds a tanginess or a bit of sourness to the dish it is added to. Full definition
The small cuts of chicken cook up quickly while the sliced broccoli gets hot but remains crunchy with a sweet and slightly tangy sauce. (localsavour.com)
Crispy florets are coated with a sweet tangy sauce for a perfect veggie - filled appetizer! (athleticavocado.com)
i missed Oscars... #gradschoolsucks on a separate note, i love the freshness of this pie with tangy sauce, yum yum yum (aclassictwist.com)