Vanilla and tea are a great combination. A very good vanilla tea is from Whittard of Chelsea.
Whittard Vanilla Tea is a black tea flavored with vanilla (some other vanilla teas are herbal teas). It is a fresh clean-tasting Ceylon tea. A good strong black tea is essential to support the heavy sweetness of chopped vanilla. According to Whittard, it is a real favorite in France.
The ingredients are tea from India and Ceylon tea, flavoring and vanilla pieces.