[PK]

Just made some black currant cordial (glorious colour). It’s been bottled in sterilised glass bottles. The recipe involved adding some citric acid. I’ll put some in the freezer for long term future consumption. But how long would you otherwise expect it to store in a cupboard and in the fridge?

[Rosemary]

We freeze ours. An open container lasts maybe a month in the fridge - but it's used so quickly it's hard to tell 

[doganjo]

Yes, I just tasted some of last year's berries quite alcoholic blackcurrant cordial hic  Should have frozen it 

[cloddopper]

From what happened to my brother Bills  black current cordial.
If it is made with a lot of sugar and stopped from fermenting with a Camden / Campden tablet it tends to develop a sort of cured rubber / sulpherous taint in the nose & the tongue after it's about four years old.
 The colour of the content also changes to a sort of deep reddish tinted malt vinegar colour even if the bottles have been stored in a cool dark place .

It does make a good liqueur if you add more syrup solution in small charges once the main fermentation slows down , you can get it up to 28 %  ABV proof if your scientific , agitate the solution after every recharge and are prepared to take several months doing it . Adding a desert spoon of glycerin & a half bottle of quality brandy to a five gallon container helps make it really smooth but with the glycerin it's not good if you have serous heart problems . 
I got well & truly rat eyed with big  bruv  Bill,  his wife & my lass one Christmas as we supped two well aged well fermented bottles of it  .. No headaches or hangovers for any of us whatsoever in the morning .

[Dans]

You can pasteurise cordial so that it'll store in the cupboard for a lot longer.

We have one of the Finnish juice extractors that pasteurises as you make the cordial but you can pasteurise on the hob too.

Dans