Sodastream's cola bold is naturally flavoured and one 500ml bottle can make up to 12 liters (50 servings) of carbonated drink. The soda mix is naturally flavoured with a very low level of sodium. It contains no high-fructose corn syrup and no aspartame additives. This is our version of cola zero. We recommend that consumption takes place within 3-4 months upon ordering and that the syrup container is kept in a cool, dry place. The soda mix is kosher under the supervision of the orthodox union.