Simon, what a big surprise!!! My father was a fanatic for Pink Gin, so Angostura Bitter was a "must have" at our home. He would be very proud to see our tiny contribution for your recipe of Rusty Nail. It's a cocktail that I love! I take a look at your site every week, your work is fabulous!!!!
My family recipe of Rusty Nail takes 2-3 drops of Angostura