As each student makes their latte, mocha, hot chocolate, flat white or whatever, in crockery or a takeaway cup, the finished effort is put in front of David for analysis, judgment and comment.
One superbly made hot chocolate, made only with milk – no water – was donated to this Midweek reporter.
"This is day two," says Poppy. "Yesterday at 9am these students arrived, some had never touched a machine. Now what they can do is really quite remarkable. Employers don't have time to teach them these basic skills."
The paperwork is NZQA Unit Standards – students get seven credits for the two days' work.
"There are four girls here who already work in cafes," says David. "They're here to fine tune their skills."
"They don't have to become baristas, but they know they can be," says Poppy.
"It's wonderful to be able to use this venue. We want to be able to do a lot of courses over here."