After searching for a 58mm dosing cup for a while, I started seeing people using little plastic cups, such as in this video https://youtu.be/swKbVF30gN0 Turns out they're just little 75ml Decor …
I'm not actually a massive fan of Heineken, but 3 tallies for $12, you can't say no. (Or you could). Plus drinking out of a tallie is way more fun than a normal bottle. I don't know …