Onggi Ferments What is this? Close icon Rating Scale Number Description 5 Excellent 4 Very Good 3 Good 2 I am not in a rush to return 1 I will not be going back Onggi opened on April 3, 2021. ReviewsOnggi FermentsPortland Press Herald (07/14/2022) (207) 352-3528Onggi, Washington Avenue, Portland, ME, USAWebsite | Map