[petre]

No way. I make espresso over ice and it's great, a lot better than cold brew. The Greek make just about any coffee using the espresso machine over ice and Koreans are quite fond of their iced Americanos, which are a bit dilluted for me but I also enjoy them from time to time. I also made Aeropress over ice with specialty coffee and its was better than the hot drink prepared using the same cofee and recipe. I just do it during summer when one would normally enjoy ice cream, the rest of the time I drink the usual hot espressos.

Room temperature coffe is just like room temperature water: boring.

Our espresso machine (De'Longhi) makes cold brew in like a minute or two. Brilliant. It's tastes like normal cold brew but I enjoy espresso over ice better. Maybe this ultrasonic espresso machine could achieve better extraction with cold water than purely pumping water at high pressure through coffee?

Anyway I'd be quite excited to see a review by James Hoffmann when it hits the market.