Red must volume to weight ratio

[E.E.B.]

Hi everyone!

What is the estimation for red must (withe the skins and seeds) volume to weight ratio?, i.e. what is the volume of 1 kg of must?

I one a use a man-scale to weight my must so I have to know how to estimate must volume by is weight.

 

[BarrelMonkey]

The rule of thumb that I use is 1T (907kg) grapes gives ~128gal (484L) finished wine, from 213gal (805L) must of which 75gal (283L) are must solids.

So in answer to your question, 1kg grapes yields ~0.9L must. Of course, grape weight includes the stems as well, but I think this is small compared to the fruit.

 

[jesseb]

In my experience 36kg of grapes are used to produce 30L of must, which for me results in about 17-20L of wine. But it does depend on the processes like pressing etc. and probably the variety of grapes used. Some have thicker skins so the ratio between skin/juice is different, I think.