This is a wonderful cocktail but, it's not clear to me if I should give it a try with 40ml of whiskey. Did the original version ask for 30ml, or was it 20ml and it has been updated? Cheers!
I'm not sure either. I first made the drink with 30 ml whiskey then 40 ml; I found the 40 ml better. Try making it initially with 30 mls then added 10 mls.