One of best thing ever done and doing for my health and cooking is making own miso paste. It is simple to make and never fail. Mould on miso during the process. This is a sign of success. Good Bactria is also working well. Just scrape the mould area and clean the container. Make the paste upside down. Press the pase to push air out by hands and a weight. Keep the container in room tenperature for further fermentation. Some paste is separated in small container to keep in the fridge to consume.