How long should Ice wine be aged in either bulk aging (leaving it in the carboy) or in bottle aging?
Or does the aging process only depend on the type of grape being used?
Ice wine is usually aged in bottles rather than barrels but traditions vary. The usual advice is to leave the ice wine to mature slowly for a few years at the minimum but other say it can be drinkable before that. Few recommend drinking ice wine (or any wine) before one year. Ice wines can change noticeably over time and usually improve steadily with increasing years in the bottle. IMHO the best ice wines I have tried have been decades old - I still have a langenlonsheimer Louerweg 1973er that will improve for another decade yet!!