So, how would you calculate alpha acid? Is there a formula for calculating deterioration? would you use them at all? i hear that lambics work well with old/aged hops, how would you formulate a recipe?
what about an "old" ale
No formula exists. Lambics use large quantities of aged hops to benefit from the preservative qualities without bitterness.
ya make some sort of a lambic
If they're vacuum packed and stored in the freezer, they should still be usable, but probably not for lambics.