I recommend herbal teas from a quality supplier.
This one is based in the UK and their teas are based on Ayurvedic medicine.
Welcome to Pukka Herbs - Pukka Herbs incredible organic herbs
I've tried several of their teas that claim to be uplifting/warming, e.g. 3 ginger, and ginger and lemongrass, and they're pretty effective as well as delicious IMO. The 3 fennel is deliciously sweet and calming and soothing.
US stockists here, if you're interested:
11 Perry Drive
Health Matters US
3215 Broadway, Unit 101,
Cheektowaga, NY 14225
Website: Health Matters America
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.