Peel skin from oranges avoiding pith and dry this along with the ginger slices in a low oven (120C/250F) for 45 mins
Bash all spices to release flavours and place in a large jar
Add the orange peel and ginger and top up with vodka
Pop on a lid and shake well
Set aside in cupboard for 2 weeks shaking regularly
Strain through double layer muslin or 2 sheets kitchen paper and decant into small sterilised bottles.
Will keep for up to 1 year
Use a few drops in G&T, champagne, martinis and other cocktails