Possible Clues:

• Supplier of porters we're changing in old transport system
• Tendency to seek perfection
• We may be entertained by black brother who offers booze?
• Person who makes beer
• Sabre we rattle shows such a person encouraging ferment?
• Producer of beer
• Would one err to make a web of drink?
• Calling of some monks
• Ebenezer Cobham --, compiler of 'Dictionary of Phrase and Fable'
• Bishops taking sheep for drink producer