I have 2 bottles of opened red wine. One is merlot, one is shiraz. My mil's fault as I had half a bottle open in fridge from night before. Mil came round for bbq and brought some food and drink inc another bottle of red wine.
She insisted on opening her bottle as she didn't want to drink ours out of politeness.
Anyway, so I now have a small amount in each bottle. Enough to make a glass if I mix them together. Wibu to do this?