F-Pac with Steamed Juice

[PPBart]

If making an f-pak with juice obtained by steaming grapes (no solids), should one still "simmer to extract all 'flavor' and reduce the water from the fruit."


At what point do you risk degrading the flavor with the heat?

 

[barryjo]

I wouldn't go past the halfway point. That is, reduce by half. I feel there is a risk of scorching. Also, DO NOT use anything but a glass or enamel (porcelain) pan for this. I used an aluminum pan for some rhubarb. YUCK!!!