The songs, chants and cheers from the crowd inside were punctuated by the horns of passing cars outside - most of which were bedecked with flags and red and white ribbons.
Brothers Ugur, 14, and 11-year-old Guvenz Gungor of nearby Finsbury Park had confidently predicted a 1-0 win.
"We are going to get back at the Brazilians for beating us before," said the elder.
Meanwhile outside, Ahmet Bulut from Hackney - though originally from Yozgat in central Turkey - was a happy man. Regardless of the result, he was doing a roaring trade in £5-a-time 'Turkiye' emblazoned T-shirts.
"We are very proud to get this far," he said, "no matter what the score."
Fans dragged chairs and sofas from who knows where into the sweaty smoky social club-cum-pool-hall-cum-little corner of Istanbul.
They perched on top of fruit machines, counter tops and on each other's shoulders.