This is the one recipe in the index that names a water temperature: warm to about 80 degrees Celsius, because anything hotter scorches the jasmine. The Journal's note on brewing methods admits the number has never been tested; the only verified optimum it could find was 70 degrees, for a Longjing green tea, a different plant. The recipe establishes the order: the three jasmine pearls steep alone two and a half minutes to unfurl, then six to eight lavender buds go in one or two minutes more before straining. The result is pale and perfumed, benzyl acetate on top and linalool, shared by both flowers, running underneath, lavender's linalyl acetate smoothing the finish.
The calming half rests on lavender's linalool and linalyl acetate, and the Journal's note on herbal tea and stress locates lavender's real evidence: a meta-analysis of five trials and 1,213 patients found a licensed oral preparation called Silexan beat placebo by 2.9 points on a standard anxiety scale, and all five trials were funded by the company that sells it. That is a different product from six to eight buds steeped a minute or two in eighty-degree water. Jasmine's benzyl acetate and shared linalool are covered by no trial in the Journal's sources; what's established is that they smell like jasmine and lavender. 'Quietly attentive' describes a calm, low-key cup, not a measured cognitive effect.
Water is this cup's largest ingredient, and the recipe calls it only 'filtered.' The Journal's note on tea scum found hard water can still leave a thin film on the surface after a few minutes, an organic residue off the tea, not limescale; green tea, the base of these pearls, forms it too, at about eighty percent of black tea's rate. Keep to the order the recipe gives: jasmine first so the pearls get their two and a half minutes to open, lavender last and brief so it never turns sharp. No dose of lavender in a teacup matches the licensed preparation the real evidence is about, so the six to eight buds here are doing the work of scent, not medicine.