Valmiki Ramayana Yuddha Kanda Sarga 67 Shloka 97

तदा then, महाबलः mighty, नगेन्द्राग्रैः peaks of mountains, वध्यमानः while being struck, मेदःशोणिते brain and blood, सम्प्रस्रवन् oozing out, वानरान् Vanaras, भक्ष्यामास feasting.

Then the mighty Kumbhakarna while being struck by peaks of mountains, he was feasting on Vanaras fat and blood oozing out from his mouth.