When my husband and I were in England a couple of years ago, we had lunch in Highgate at a place that also served a drink I found absolutely delicious. We have recently found the list of ingredients again, so now our challenge is: what should the proportions be?

The drink contained:

Hendricks gin
Zubrowka
apple juice
elderflower juice
mint

We have a different brand of gin and elderflower syrup, so we may need to adjust slightly for that. Ideal result is for it to not taste very alcoholic — since I don’t like drinks that are terribly strong. Any suggestions for proportions?

Edited to add: It was served in a martini glass, to give you an idea of final volume.