Root Beer Refill:
Mr. RootBeer mixes are designed specifically to be carbonated in the bottle. Due to this carbonation process your root beer contains trace amounts of alcohol (about 1% ABW).
Reusable Plastic Bottles with Caps and Gaskets:
Each Mr. RootBeer kit includes four reusable, amber, 1 Liter PET (Polyethylene Terephthalate) beer bottles. PET plastic is FDA approved for food and beverage. Each kit also contains four reusable plastic screw caps with pressure relief gasket. These caps are designed to release excessive bottle pressure as a safety measure.