Possible Clues:

• Small bottle holding the last of Spirit of Life
• Essential for life
• Initially very important to all life
• Necessary for life
• Life-giving
• Essential to establish temperature in medicine bottle
• It's most important to have a little tea in a little bottle
• Essential to life, critically important
• Most important to have a little tea in a little vessel
• It's a must to be opposed to a lot of Europeans