Hi.
I made three batches (15 gallons each) of dried elderberry / blackberry / summer fruits wine (some oaked with oak dust/granules, some with oak cubes and some with oak staves) with a six month interval between each batch. I have now racked the first batch 4 times (since it entered the primary fermentation container) over the last 2 years. It has been sitting in better bottles since and is looking, smelling and tasting quite good.
I now plan to bottle the first batch faily soon (the subsequent two batches will follow at 6 month intervals). I planned to rack a final time before bottling and am beginning to consider how much sulfite or campden tablets (if any) I should add in this last rack - per 5 (UK) gallon batch. I added some (I think a campden per gallon) at must stage and I think the same quantity again after about a year but I confess I have lost the paperwork. (I also have no access to sulfite tests that I know of).
I invite suggestions of a suitable addition per 5 gallon batch to help this wine age. The wine is medium heavy with dried elderberries and other fruit and I plan to age it in bottle at least a further year before drinking any more - it is still pretty tannic (as an ex-smoker and tannin lover that is perfect - I like that in a wine), but I would like the wine to survive at least a further 3 years in bottle after that - preferably more. I plan to bottle some with high end colmated cork, some with natural cork and some with synthetic seals as an experiment unless anyone has definitive arguments for a single high quality and sourceable seal for my recycled bottles.
Suggestions please and thank you :)