What ingredients are all found in tea coffee and chocolate?

The only ingredient that is universally found in tea, coffee, and chocolate is water.

Here's why:

* Tea: Tea is made by steeping tea leaves in hot water.

* Coffee: Coffee is made by brewing coffee beans with hot water.

* Chocolate: Chocolate is made from roasted cacao beans, which are processed with water during various stages (e.g., grinding, mixing, etc.).

While water is the common ingredient, each beverage also has its own unique components:

* Tea: Tea leaves contain caffeine, tannins, antioxidants, and various other compounds.

* Coffee: Coffee beans contain caffeine, chlorogenic acid, antioxidants, and other compounds.

* Chocolate: Cacao beans contain theobromine (a stimulant similar to caffeine), fat, sugar, and other compounds.

Therefore, while water is the only ingredient present in all three, their flavor and effects are derived from the unique compounds present in their individual ingredients.