The Ketuwinan tradition is a form of spread of Islam in Kaliwungu. Kendal in the 16th century AD. One of the spread of Islam through walisongo is a culture that culturing between culture and religion which is packaged attractively to captivate the hearts of the people to Islam. but is does without abandoning the previous teachings (tradition). https://herbsdailyes.shop/product-category/red-marine-algae/