www.gourmetago-go.blogspot , Chef Jules asked for an update so here it is... He makes his own and only uses Vodka. Paul www.eatmefood.blogspot.com had asked me if Vodka was ok and I had said I thought it to be the very best alcohol to use for this and Chef Jules tells me he makes his own all the time and only uses Vodka. So my advice was spot on (thank goodnes!!!).
As you can see it is even darker than the last photo and it's only really been a week. I had to hold this to the light to be able to take a photo where you could see through the glass.
I think you need to leave it for at least 6 or 8 weeks so by that time it should be really great.