You have a few other options, mainly buying either an extract or powder that uses its essence. However, these two ingredients aren't completely interchangeable. Since baking is such an exact ...

After filtration and concentration, the solution undergoes further processing through evaporation to produce a highly concentrated Rooibos extract, which is then dried into a fine powder.

Green tea extract, along with eight other ingredients used in health functional foods, are selected for safety and functionality re-evaluation by South Korea’s food and drug regulator.