Glass Shape on Guinness Waves

A simple "experiment" showing the conclusions drawn in Benilov, Cummins and Lee (2013). The usual downward propagating liquid waves in the settling Guinness mixture do not appear if the pint glass is inversely shaped. The counter-current flow pattern is reversed and any such waves would occur near the center of the glass.
(A bit hard to distinguish the shape of the anti-pint glass due to the fish eye, but it pretty much uniformly decreases in diameter after the first half inch.)
(Also I apologize for missing the backdrop, oh well.)

Refs.
E. S. Benilov, C. P. Cummins, and W. T. Lee, Why do bubbles in Guinness sink?, American Journal of Physics, Vol. 81, Is. 2, pp. 88, (2013).

[brandonm]

after 5 years, the first comment is mine! For the record Cool effect in the regular pint glass.