A story in a tea cup

I was at a statewide medical conference.The organisers had provided an all-day counter offering fresh tea,alongside the standard "tea bag"facilities. No one can resist freshly brewed tea,so I walked out of a sonorous session for a hot cuppa to clear my brain.The surging crowd of medicos outside the free tea stall put the seminar halls to shame.I elbowed my way to the front,where I got my first glimpse of the sweaty tea seller standing in the sweltering heat.