I don't own a coffeehouse (though I used to own a tea bar), but I do manufacture some amazing iced teas that are very simple to prepare, and might be a good fit for you. We have green teas, black teas, white teas and even caffeine-free African honeybush (all of our teas are also organic). If you are interested, please check out the wholesale area on our website (see my profile--I'm too new here to post a link apparently) I could set you up with teas to serve and packaged teas to sell really easily, and your customers would thank you.