Keep your vacuumed portions well separated for better circulation of your water container /reservoir. This allows you to achieve better, repeatable results because your sous vide portions are well heated from all sides. Bags that lie next to each other do not heat up properly so that the product does not cook optimally, which may result in less well-cooked zones. That is a shame, and easy to prevent with our sous vide separation racks. You can also use these sous vide racks to keep your bags under water.