Refreshing foods and beverages have been used in daily life to improve alertness and mood. Coffee is one of the most common drinks which are related to performance enhancement. However, its effects on brain function have been unclear in terms of coffee ingredient or taste perception impact. This study investigated electroencephalographic (EEG) patterns after receiving taste without swallowing and normal drinking of coffee in both genders of 20 subjects aged between 20 to 30 years old. This project was approved by ethical committee for using human subjects. Electrodes were placed on the scalp over the frontal and parietal cortices. Freeze dried instant coffee (Moccona, Royal gold) was purchased from commercial source. EEG signals from individual subject were recorded for 5 min for baseline levels and 10 min following taste alone or drinking of coffee. Fast Fourier Transform (FFT) algorithm was used to analyze EEG signal in frequency domain. The parietal EEG analysis showed that slow frequency activity (0.8 – 4.5 Hz, delta band) was reduced by both taste and drinking of coffee with similar magnitude. In addition, high frequency activity (18 – 35 Hz, beta2 band) of parietal EEG was increased by both types of trials. No significant change was detected in frontal EEG. These patterns are general characteristics of refreshing beverages. In summary, taste perception was demonstrated to be as effective as drinking of coffee ingredients. These findings suggest that taste perception might induce conditioned response through associative learning. Besides, coffee taste may be alternative choice to prevent relapse during coffee withdrawal period.