The Basi Revolt Paintings - National Cultural Treasures In 1807, Ilocano folk from Piddig, Badoc and other northern Ilocos towns, marched southward towards the provincial capital of Vigan to protest against a Spanish-imposed ban on the private manufacture of basi, the traditional sugarcane wine. The group, led by Pedro Mateo and Saralogo Ambaristo, were met at Bantaoay river in San Ildefonso by a Spanish-led army, consisting of the military, natives and mestizos, ready to quell the uprising. Thu