Gravity Points of Fresh Fruit

[Marko85]

Hello all! I have 7kg of plum that I have stewed down into a sauce. It's currently a frozen block taking up room in the freezer which is making me unpopular around the house so I need to use it asap. I was hoping to brew a porter style and was thinking I'll just defrost it then chuck it in last 10min of boil but have absolutely no idea what this will add in terms of gravity points. Anyone here able to share their experience's with using fruits in a brew please and how I could calc gravity before I actually brew? Cheers.

 

[The Baron]

Hi you could use a refractometer if you have one as that is what they do measure the sugar content and then use charts to convert to standard amounts.
Also if you use a online recipe builder and put in plums they have a average amount built into it that will not be too far out.
I would add your fruit to the FV rather than in the boil for best impact but do be aware it will swallow up some of your wort/beer