DIY carb cap for Champagne bottle

[Sfd123]

Hi, I am hoping to make or buy a carb cap that would fit directly onto a champagne bottle. Something that could be used for storing an opened bottle under pressure for a few days until you are able to finish drinking it.

Something like this

https://www.bostonapothecary.com/for-sale-champagne-bottle-manifold/

I’m curious to see if anyone else has tried to Build this kind of cap

 

[BBBF]

If you don't care about how it looks, you could transfer the champagne to soda bottle and use a carbonator cap to restore/keep it at the higher pressure.

 

[sarah_06Z]

I would like to preserve the smaller bubbles of the natural carbonation as much as possible, and avoid transferring it to a different container