Cheese

Cheese was type of dairy produce that was made mostly from milk. Cheese could come in many different types of shapes and flavours and was used as an ingredient in many foods.

Cheese apparently existed on Alzarius, but not on a nearby planet also in E-Space. (TV: State of Decay)

The Eleventh Doctor used cheese when making himself and Craig Owens an omelette consisting of many other ingredients, such as ham and mayonnaise. Craig remarked that it was the most enjoyable thing he had ever tasted. (TV: The Lodger)

While hiding in the Doctor's TARDIS, Klov Dreb Fotch Passameer Day Slitheen III stole, among other food, cheese sandwiches. (WC: Who Ate All the Biscuits?)

The Eleventh Doctor claimed to have a doctorate in cheese making. (TV: The God Complex)

Rats were associated with cheese. (TV: The Bells of Saint John)