Freshly boiled distilled water (900 g) was poured onto 11.25 gsieved plant material, infused for 5 min and strained in to a 1 L stainlesssteel thermos flask. The infusion (ca. 100 mL) was served in white por-celain mugs covered with plastic lids to prevent loss of volatiles. Mea-sures taken to keep the temperature of the infusions constant during
serving include pre-heating of the thermos flasks and mugs and theuse of a temperature-controlled (65 °C) scientific water baths duringserving as proposed by Koch et al. (2012).