Top up cider???

[Pyg]

I have 3.5 gallon of cider I am letting sit in hopes the sulfur smells goes away.
What can I top off with?
I know I with wine and beer I just used commercial like style.

Same for cider?

 

[Rish]

More juice, a finished cider if you have some or, as you said, a store bought hard cider should all work fine.

 

[beren]

Use some sanitized copper and it'll take the sulfur away in a few mins.