Make an Old Ale with it and lots of caramel malt, the age it for a year. At some point the aging will wipe out the extract twang. Took a bronze in the old national AHA club competition with very old LME, so it’ll work.
One of the other recommendations I recall from old threads (or perhaps even TechTalk) is to over pitch. For some reason, more yeast works well with old LME. At least that’s my recollection.
It will make beer either way. But I think an Old Ale might be a good suggestion.
When you say age it for a year, what temperature are you talking about? I could throw it in a fridge for a year, but would not be able to keep it at cellar temperatures.
A friend of mine recently brewed a 6 year old can of pilsner LME. It came out the colour of Schwartzbier. Haven’t had a chance to taste it yet, maybe this weekend, but it sounds like it fermented fine.