Is it possible to be allergic only to hot coffee and tea, but not cold?

be the most caffeinated type of tea or would there be another type of commercial brand tea that has just as much if not more caffeine? can someone who knows about tea please tell me of the cold brew tea method? thank you.

Whenever I drink coca cola of any kind I get a headache but when I drink coffee and tea I don't? I haven't tried any other fizzy drinks to see if I get the same with them ...show more

Choose now or forever hold your peace. The cold is coming refresh your body

I love tea. I'm always on the search for others opinions and thoughts of tea. I prefer earl grey, mint (peppermint - spearmint), or black tea myself. My grandma got me started drinking tea she always told me that tea was better for you than coffee. I...

Goodnight everyone.

This is a follow-up question to Why is iced coffee more expensive than hot coffee?.

For instance, does it include Herbal tea, black tea, white tea, green tea? I think I already know the answer (it refers to any thing from the actual tea plant) but I can't find that anywhere anymore.

even though my chart says im not allergic to tea???