16 August 2018 Tempeh fermentation container Posted on August 16, 2018 by Durgan 16 August 2018 Tempeh fermentation container16 August 2018 Tempeh fermentation container To many beans were made for my normal metal containers, so I placed the extra beans in a zip lock bag and made air holes with a meat fork on both sides of the bag. Fermentation was perfect. A serendipitous result. Hence forth a zip lock bag will be used for holding the beans when fermenting. The meat fork prongs make the hole formation simple.