I think an espresso machine would heat the alcohol past its boiling point.

The phrases "past boiling point" "under pressure" & "highly flammable" do not give me a warm & fuzzy feeling when placed next to each other.

Hell, I don't know, could be perfectly safe. I'd make sure there was no open flame about, though.
grumio Reviewed by grumio on . espresso machine?? last night i was making some coffee and i had an idea of putting buds in a espresso machine. the high pressure and heat can sure extract coffee extremely well, could or would it work the same with other plant materials?? Rating: 5