The retail giant said this week that people can now use Alexa, the voice-activated digital assistant, to order products that are part of Amazon’s (AMZN) Prime Now two-hour delivery service. With the change, a limited number of items like coffee beans, potato chips, and cold medication can arrive on shoppers’ doorsteps more quickly than it takes to read a magazine.

People can ask Alexa to start placing orders via Amazon devices like the Amazon Echo web-connected speaker, Echo Dot, Amazon Tap, Fire Tablet, and Fire TV.

Shoppers must specifically tell Alexa to place orders for items “from Prime Now” to get two-hour delivery.

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People can order as many products as they want, but they must be current members of its Amazon Prime subscription service, which costs $100 a year. Amazon’s Prime Now two-hour delivery service is free for Prime subscribers.

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Currently, alcohol delivery is only available in a few cities and the kinds of alcohol available varies. Seattle residents will be able to order tequila, whiskey and other liquors, for example, while residents of Columbus and Cincinnati can only order beer or wine.