Buttermilk.

sniper03, Jun 26, 3:56pm
How long does it last for? Bought some last week and have used half rest has been kept in the fridge,should be still good to use?

veejay13, Jun 26, 11:17pm
Hasn't it got a use-by date on it? Some I bought recently had a date three weeks ahead, so yours should still be okay if you only bought it last week.

kay141, Jun 26, 11:49pm
Many cultured products say on the container to use within a certain number of days once opened. 5 or 7 days seem to be the most common.

griffo4, Jun 27, 1:54am
l have left it in the fridge longer than that and used to and it has been fine

gilligee, Apr 27, 9:57pm
Me too. Weeks old and the scones were delicious.
Sour cream is great for scones.