Always improves with the addition of a good sized ice-cube I find
The old chestnut about only picking sloes when the frost has had them is a bit strange, pick now & freeze overnight does the same as far as I can taste.
My sloe crop is rather poor this year, so it's Damson gin for me for a change. PM me for a good recipe if you want.
I'm also thinking of trying a mixed jar of "Hedgerow Gin" (blackberries, elderberry, raspberry etc), purely for research you'll understand, will keep you posted.