Feasibility of chemical and microbiological quality of sambal onion formulation Ny. HangR.A. Hangesti Emi Widyasari, Firman Muhamad Basar, Ani Nuraeni and Farida Ratna DewiE3S Web Conf., 454 (2023) 02023DOI: https://doi.org/10.1051/e3sconf/202345402023