Hi,
I am wondering why the information that 3/4 of the harvest is just sold is not addressed later in the case. We are not given margins for the two different "products". Instead, the case turns towards focusing on improving 25% of the business rather than focusing on their core product - an idea that would be welcomed with an owner that has not capabilities within wine-making.
A suggestion to merely stop selling bottled wine could end being a solid recommendation if the margins were higher for the grapes (one could assume that the marketing costs are no longer relevant). I am not saying this is what I could imagine but the problem is that one does not know based on the case.