There is nothing wrong at all with cheap gin – as long as the alcohol content is high enough this is hte important aspect. You are dramatically changing the flavour with the sloes after all. Friends and I have used own brand gin and cheap holiday gin without exception and had comments on how damned good it is. Don't wait for the frost over ripeness – my local sloes are ripe now so I'm picking them now.
Take bottle of gin, empty half gin out.
Put sloes with skin broken (different methods here) into bottle until half full with sloes.
Put 150g of sugar (granulated is fine) in there, top up with gin.
Shake, put in dark place, shake once a week.
3 – 6 months later, decant wonderful gin, drink.
This year I want to try sloe sherry and slider. You use the gin-soaked sloes and chuck em in a gallon of scrumpy or a bottle of sherry – then leave for a bit.
Hic!
I think I have enough sloes for a couple of gallons this year – a great harvest!