Assalaamu alaykum wa rahmatullaahi wa barakaatuhu. I wanted to make homemade pineapple cider vinegar. It involves putting pineapple skin scraps, water, and dark brown sugar in a container for 2 weeks. Then it is ready; is it halal for me to consume this?

All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallahu ‘alayhi wa sallam, is His slave and Messenger.

We do not know of the results of mixing these ingredients. However, the basic principle regarding vinegar is that it is lawful for consumption. ‘Aa’ishah, may Allah be pleased with her, narrated that the Prophet, sallallahu ‘alayhi wa sallam, said, “How excellent is vinegar as a sauce (i.e. when eaten with bread)!” [Muslim]

The same ruling applies to pineapple and its skin; it is a lawful produce of the earth, unless this mix becomes intoxicating, and in this case it would be unlawful. For more benefit, please refer to fatwa 88722.

Allah knows best.