This study aims to determine the effect of adding coconut liquid smoke sonication on pH, Water Holding Capacity (WHC), tenderness, L*a*b* color, and duck jerky aroma. The jerky is made from ground duck meat with additional spices such as salt, brown sugar, garlic, ginger, galangal, and coriander. The concentration of liquid smoke used is 1.5%. This research method used a completely randomized design (CRD) with 6 treatments and 3 replications consisting of P0: without adding liquid smoke, P1: liquid smoke without sonication, P2: liquid smoke sonication for 5 min, P3: liquid smoke sonication for 10 min, P4: liquid smoke sonication for 15 min, and P5: liquid smoke sonication for 20 min. Parameters observed included pH, WHC, tenderness, L*a*b* color, and aroma. Data were analyzed using Analysis of Variance (ANOVA). If the data shows a significant difference, proceed with the Duncan Multiple Range Test (DMRT). The average value of pH was 5.66-6.12, WHC was 70.67%-79.67%, tenderness was 3.27-4.93, lightness (L*) was 42.62%-44.86%, redness (a*) was 11.12%-12.86%, yellowness (b*) was 12.03%-12.49%, the aroma was 1.67-3.87. The results showed that sonication liquid smoke had no significant effect (P > 0.05) on pH, WHC, L*a*b color, and aroma but had a very significant effect (P < 0.01) on tenderness. Liquid smoke with sonication for 10 min is the duck jerky that panelists must accept because it has the right aroma of smoke and meat taste.