Tea is a drink that is liked by all ages. Apart from its fresh taste, tea also has properties for health^{(Reference Khan and Mukhtar1)}. Cinnamon and cardamom are great sources of antioxidants. Cinnamon contains cinnamaldehyde, eugenol, cinnamic acid, catechins, epicatechins, and other polyphenol compounds^{(Reference Friedman, Kozukue and Harden2)}. The bioactive components in cardamom, such as cineol, terpineol, borneol, saponins, flavonoids, and polyphenols are also known to have antioxidant activity that is beneficial to health^{(Reference Chakraborty, Paul and Mallick3)}. So that the combination of black tea, cinnamon and cardamom is possible if it is made into herbal teas. The purpose of this research is to obtain an optimal formulation of the herbal teabags that made from black tea, cinnamon and cardamom.

This study used Design Expert Application with Design Mixture D-optimal method. Responses in this studies are physical test by colour intensity, chemical test by total phenol value, antioxidant activity, moisture content, ash content, and sensory response are colour, flavour, and aroma. This Study using 35 panelise. The data were processed using ANOVA which has been provided in the Design Expert 7® program. An optimal formulation determined based on desirability number.

Herbal teabags that made from black tea, cinnamon and cardamom, of the 16 formulations that has offered to produce an optimal formulation based on desirability. The optimum herbal tea bag formulation which contains 43.62% black tea, 11.38% cinnamon and 45.00% cardamom. The formulation has been resulted by program 70.87% colour intensity, 7.18% water content, 0.07% ash content, total phenol 3.2 mgGAE/g, antioxidant activity 1.07 μg/mL (IC50), 3.64 hedonic colour (like-very like), 3.4), and a flavour of 3.56 (like-very like), colour is 4.28 (slightly reddish brown), aroma is 4.32 (strong) and flavour is 4.16 (not bitter).

The optimum formulation is composed by tea 43.62%, cinnamon 11.38%, and cardamom 45.00%. The characteristics of the tea produced were water content of 7.18%, ash content of 0.07%, total phenol 3.2 mgGAE/g, antioxidant activity of 1.07 μg/mL (IC50) and colour intensity of 70.87%.