Allotments 4 All

I Love them.   I have one variety which I just eat straight from the bush.  I freeze them and then add apple juice and zap in the microwave.  Really love this with meat.  Use instead of cranberries for Christmas.  You can prune as a cordon so they do not take up much room. 

Also good in a mixed summer fruit pudding. 

Bob Flowerdew explained the trick on GQT a year or two ago.
When you think they are ripe,  wait another fortnight.
Taste them,  and wait a bit longer.
When,  eventually,  they taste sweet,  harvest them!

Of course,  if they are not in a fruit cage,  the birds will have taken them long before they are sweet!
If you leave them long enough (and water enough) the skins become sticky with sugar.

Ours are in a cage.   We freeze pounds every year,  and eat,  thawed,  as a dessert with cream or ice-cream.