A beverage brewer (10) with a controller (14) that automatically disables selected brewer functions unless enabled by an enablement code that enables use that is only sufficient to brew a preselected quantity of beverage by mixing the brew ingredient (18) with water has a reader (54, 56, 58, 56, 59, 62) for communicating with and reading the enablement code (86) from a smart card, card with magnetic strip or other data carrying medium (FIGS. 4 and 5). The enablement card when used by a delivery employee has codes for multiple customers, etc. that is used by the delivery employee to enable the brewers to brew the brew ingredient that is being delivered but no more to avoid brewing of ingredient not provided by the distributor of the brew ingredient. Alternatively, one card (52) is used for each location or each brewer and may only be used with the location or brewer that is indicated. The controller (14) is capable of disabling the brewer function, the hot water function, or both, the bypass function, the brewing function or all in response to overuse or in response to the passage of time without required maintenance. The individual enablement code medium may be attached to the container of the brew ingredient permanently or detachably, mailed to the customer with billing, etc. or the enablement code may be entered manually or via a communication modem associated with the brewer (10). When a smart card or magnetic stripe card is used, then the brewer may write to the card the amount of brewer usage or hot water usage which information can later be downloaded to a billing computer at the home office of the distributor in addition to, or in lieu of, automatic disablement of the brewer functions when they exceed preselected maximum amounts.