A disposable pod adaptor assembly for use in a single serve beverage brewer. The assembly is designed for use in brewers configured for cup-shaped beverage extract cartridges. The assembly includes a receptacle and a cover configured to engage with the receptacle. The receptacle includes a raised portion in its interior, which raised portion is adapted to push a beverage pod residing inside the receptacle upward against the cover to create a tamping effect. In some implementations, the receptacle and raised portion are molded as a single piece to provide a low cost disposable pod adapter.