To clean a stainless steel growler:

  1. Rinse it immediately after use to avoid beer residue drying inside.
  2. Use warm, soapy water and a bottle brush to scrub the inside. Focus on the neck and bottom areas where residue may stick.
  3. For stubborn stains or odors, use a mixture of baking soda and water, or a vinegar solution, then rinse thoroughly.
  4. Dry it completely with a clean towel or let it air dry.