The quality of instant baby porridge leads to nutrient content, consumer’s acceptability and shelf life. The use of freshwater snail flour (Pila ampullacea) as a substitution in the product increases the product nutrition value. The study analyzed nutrients content, acceptability, and shelf life of instant baby porridge. An experimental study with a completely randomized single factor design by using the three ratios of freshwater snail flour KS 0 (0%), KS I (10%), and KS II (15%). The acceptability test (hedonic test) was held on 25 semi-trained panelists and Arrhenius for shelf life analysis. Data were analyzed using One-way ANOVA, Krusskal wallis test, and Mann-Whitney. The substitution of freshwater snail flour could affect the nutrient content of carbohydrate, protein, fat, fiber, water, ash, iron, zinc, and calcium (p<0.05). The substitution could affect the consumer’s acceptance properties include color, flavor, texture, and taste (p<0.05). The shelf-life testing for 15 days obtained results, KS 0 formula in temperature 35oC, 45oC and 50oC is 7.13; 2.13 and 2.16 months respectively. KS I Formula in temperature 35oC, 45oC and 50oC is 39, 40, 41 days. KS II Formula in temperature 35oC, 45oC and 50oC is 6 years 7 months, 6 years 8 months, and 6 years 9 months. Based on nutrient content analysis, the substitution of freshwater snail flour could have enhanced protein, zinc, iron, calcium, and fat. KS I, the best formula obtained has 20 g contribution in one serving, fulfilled the energy adequacy of 14.41%, carbohydrates, 15.36%, protein 17.7%, fat 10.27%, fiber 1.7%, water 0.16%, iron 11.25%, zinc 10%, calcium 35.10% and the shelf life in temperature of 35oC is 39 days, 45oC has a shelf life of 40 days and 50oC has a shelf life of 41 days.