Del_UK Well, I tried! I used your measurements exactly and luckily enough had a suitable glass. I used a bean that I found in the back of the cupboard. It was roasted before Xmas then vacuum packed. It was abundant with blueberry but not quite so much now! Tomorrow I will try it with something darker and fresher!
I have just realised that my son has an Oxo Good Grips cold brewer so he can make the brew up for me. With fathers Day fast approaching I might get my two sons to buy me the Vevor Nitro maker and have a bash!