Possible Clues:

• Seems it is an E in the blooming infusion
• Tea's in -- this herbal infusion's out
• Infusion from can not quite all there
• Tea in tea's gone to pot
• Possibly relax with most of a fresh brew
• Infusion of eg herbs, flowers
• E, that's what it is - an infusion
• Infusion of an E, that's what it is
• Just one E, so it is, in fusion, perhaps
• What emerges from pot is an excellent infusion