Between 1415–1416 he gathered Turkmen peasants, Greek sailors and Jewish merchants on the Karaburun peninsula in order to rebel against high taxes and other injustices.
Börklüce Mustafa's life is relatively obscure, and well into the 20th century scarcely covered by scholarship, except in the context of his mentor, Sheikh Bedreddin.
[3] Eventually, Mustafa was won over by the teachings of Sheikh Bedreddin, a supporter of Musa Çelebi during the Ottoman Interregnum, who had been exiled by Sultan Mehmed I to Iznik.
[5] Mustafa himself set the example for his followers by living as a simple hermit, devoting his life entirely to prayer and the propagation of his ideas.
[3] When Sheikh Bedreddin fled from Iznik to Sinop, Mustafa too abandoned this area, seeking to establish himself and his followers in a place of greater safety than the former Ottoman capital.
After the defeat Mehmed sent Timurtaş Paşazade Ali Bey with all the troops of the Saruhan province and Aydin to Karaburun.
Mehmed who heard the news this time sent his son Murat and Bayezid paşa with the troops of Rumelia and reinforcements from Anatolia on Börklüce.