Proper steeping time is required to get the right taste, otherwise the taste of vanilla will overwhelm the tea.  I suggest 10 minutes.  I know it's a long wait, but it's worth it.  I get great pleasure out of making a cup of this tea for anyone that has not tried it and waiting to see the look on their face.  I wait as it steeps with a secret grin and then let it cool a little until it is the perfect temperature.  My friends don't come back asking for more, because they are immediately to the store to buy their own.  It is simply the best tea I have ever had anywhere.  It is wonderful hot on a snowy evening and steeped and cooled and poured over ice in the summer.  IT is wonderful to combine with another fruit like tea to give it a kick.  It is wonderful in every way.