Please correct me if I am wrong. You can't do mlf on wine that has sorbate. But You can sorbate a wine that has been through mlf. It is the conversion from malo to lactic acid that causes the geranium smell.
SJO
Go easy with the nutrients..... and with the colour, I cannot suggest anything, because that's what happens with some strawberry varieties. It might come back when all the sulphur is bound (it is quite a bleaching agent ), but the best you can hope for is a light brick red. The back sweetening with juice will definitely help. A huge tip with strawberry wine is to make sure you keep an eye on levels of sulphur - camden tablets - and make sure you add them after ferment is finished and then a few weeks later. The active preservative - free sulphur - is absorbed ( bound) very quickly after ferment, and you must replace it. Strawberry will go aldehydic very quickly if not cared for.
Are you sure it wasn't degassing in the bottle and blew the cork - this is very common if the wine is not degassed properly..
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