I was having trouble getting the flavors just right for Lipton's bottled diet green tea, which has become such a big seller. Real lime juice wasn't cutting it, nor were any of the extracts or oils I tried. Then, one day, I stumbled onto a new product called True Lime. It's a crystallized lime substitute that's made with lime juice and lime oil, and it comes in 2.85-ounce bottles or in boxes of 40 packets. It can be found in the baking aisle of your local supermarket, and it can be used for cooking wherever lime juice is required, or you can dissolve it in beverages. Had I found my secret ingredient? After some experimenting, I discovered that the citric acid in True Lime adds just the right amount of acidic tang that we need for a clone that tastes like the original product (which also contains citric acid). Success! To make your own version of this popular bottled green tea, simply pour some boiling water over a couple green tea bags, add the other ingredients listed below, and you'll soon have a home-brewed clone of Lipton's hit drink. Calories not included.

Source: Top Secret Recipes Unlocked by Todd Wilbur.

I found a great secret ingredient to duplicate the lemony bite in a can of Brisk Iced Tea: Kool-Aid unsweetened lemonade drink mix has the perfect mixture of citric acid and lemon juice solids to help you effortlessly clone this one over and over again by the pitcher, as your thirst requires.

Source: Top Secret Recipes Unlocked by Todd Wilbur.