Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to micro brew beer [title] Clean all of your brewing equipment. [step] To avoid bacterial infection of your beer, every piece of equipment that touches the liquid will need to be thoroughly cleaned. Before brewing, clean each piece of equipment with a specialized brewery cleaner.

Ending1: Check the manufacturer's manual for particular instructions for cleaning. [substeps] Do not leave your brewing equipment out for longer than two hours, and make sure you set it up in an easily accessible area. Ending2: [substeps] Alternatively, you can regularly wipe down brewing equipment with a degreasing cleaner. Vinegar-based cleansers and degreasing agents are available at retail stores; find your preferred products locally, and try an online database of this consistency. Ending3: Then, prewash each piece of equipment, which should be disinfected thoroughly to prevent bacterial growth. [substeps] Flea and tick preventative cleanings are especially necessary for best results. Ending4: The most popular product is pbw (which stand for powdered brewery wash), and is available from brewing supply shops like northern brewer or more beer. [title] Sanitize all of your brewing equipment.

Answer format: ending1/ending2/ending3/ending4