You’re absolutely right. I doubt anyone could tell a stout apart (by taste) that had multiple pours. If anything, the two-part pour has more effect on the head, and...
I would bet you could spot the Guinness blind. With the possibility of mixing up Beamish with it. More interesting is which one someone prefers when they don’t have branding...
‘I like your manifesto let’s put it to the testo’ As the Sultans of Ping said. Can you blind tell a guinnes poured in 6,3,2 or 1 goes apart? Would you say guinees...