Zoheir Ali Esmail, Shaykh Zoheir Ali Esmail has a Bsc in Accounting and Finance from the LSE in London, and an MA in Islamic Studies from Middlesex University. He studied Arabic at Damascus University and holds a PhD... Answered 1 year ago

Bismillah

Thank you for your question. Beer is impure and so is forbidden to consume in any amount. So if the fish is covered in batter where one of the ingredients is beer any part that the beer may have touched would be unlawful to eat. 

May you always be successful.