Rambutan (Nephelium lappaceum L.) peel extract has been found to contain natural fermentation inhibitor components that inhibited fermentation in cider, cassava tapai, coconut neera, and sugar palm neera. This research was aimed to investigate the encapsulation of ethanolic extract of rambutan peel using corn starch or gelatin placed in perforated pouches in sugar palm neera to delay fermentation for alcohol production. Physicochemical characteristics of treated neera (pH, total titratable acidity, total dissolved solid, total reducing sugar, total sugar, alcohol content, and microbial enumeration) were analyzed. After the pouch containing ethanolic extract encapsulated with corn starch or gelatin was immersed into neera and let fermented, several treatments resulted low alcohol content as compared to untreated neera, which showed the successfulness of encapsulated rambutan peel ethanolic extract to delay the alcoholic fermentation. Other characteristics of treated neera also performed differently with the control. The alcoholic fermentation resumed after the pouch was withdrawn prior to the alcohol peak producing the highest alcohol content of 7.37±0.19% and 6.95±0.15% for ethanolic extract encapsulated with corn starch and gelatin, respectively. Treated sugar palm neera that produced highest alcohol content was selected for distillation process, which was done in order to obtain bioethanol. The bioethanol obtained from neera treated with ethanolic extract encapsulated with corn starch resulted alcohol yield of 14.89±0.49 to 29.83±0.83% and alcohol content of 56.21±0.07 to 58.76±0.05%. Meanwhile alcohol yield of bioethanol obtained from neera treated with ethanolic extract encapsulated with gelatin was 22.29±0.48 to 50.58±0.15% with alcohol content of 49.87±0.22 to 51.95±0.29%. Both treatments showed higher alcohol yield than control which were 20.73±0.76% for corn starch and 23.15±0.73% for gelatin. This signifies the addition of extract encapsulated with corn starch or gelatin into sugar palm neera was able to delay alcoholic fermentation. Furthermore, pouch withdrawal was successfully let the fermentation process to resume and the treated sugar palm neera yielded high bioethanol, therefore would be beneficial and useful for farmers.