I did this experiment upon discovering a bag of frozen
grapes in the freezer which dated from Christmas 2017. After some cursory research I discovered that
I could apparently make jam with them.
The results were both good and bad.
But only 1 and a half jars resulted so it's not a big deal.
Ingredients:
1 pound frozen blue grapes (approx. 500g)
Sugar – 1 cup – 250g
Lemon juice – a squeeze
Method:
The recipes I found suggested that you peel the grapes
and then blend the skins before adding back the pulp. They also suggested de-seeding the grapes.
I tried to avoid most of this faff – which probably
explains the result.
I just threw the thawed grapes into a pot and tried to
mash them – with limited success. I then
snipped at them with kitchen scissors until my patience wore out.
I then boiled the grapes for about 5 minutes before
adding the sugar and the squeeze of lemon juice.
I boiled it away fiercely for about 25 minutes. I tested it on a plate cold from the
freezer. It didn't show any particular
signs of setting.
But I had had enough.
I poured it into my clean jars and waited to see.
It had thickened up a bit but was still a mix of runny
and grape skins and pulp. The taste was
ok though.