All you need:
1 tea bag (any flavor will do)
8 oz or so of filtered water
organic heavy whipping cream (however much you feel like adding)
Start out by brewing your tea, when I am just making one cup of tea I just microwave a cup of water for 1 minute, then let the tea steep about 3 minutes. Fill the remainder of the cup up with ice and stir in the heavy whipping cream. Sometimes if I am really craving something sweet, I'll add a little Truvia sweetener.
I switch it up with hot tea and iced tea, it tastes great either way you do it.
Now my usual drink at coffee shops and restaurants is either unsweetened tea with heavy cream or an Americano with heavy cream, best of both worlds zero carbs and high fat!!