Back in garret, we procured something like tin (6)
I believe the answer is:
pewter
'tin' is the definition.
(thesaurus)
'back in garret we procured something' is the wordplay.
'back' says the letters should be written backwards.
'in' indicates a hidden word.
'retwep' can be found hidden inside 'garret we procured something'.
'retwep' reversed gives 'PEWTER'.
'like' acts as a link.
(Other definitions for pewter that I've seen before include "Grey alloy of tin and lead, makes mugs etc." , "Beer-tankard alloy" , "Tin alloy for utensils" , "Bluish-grey alloy" , "Tin/copper (utensils)" .)