Diet card
A diet card was a type of record tape that held information on specific foods. They were used in conjunction with the food synthesizer to create the food listed on the cards. 

The chief medical officer aboard Federation starships could issue diet cards with specific nutritional requirements for individual crewmembers. In 2266, Doctor McCoy changed Captain Kirk's diet card to include dietary salad, as Kirk's weight had gone up a bit since his most recent physical. ()

Later that year, Lieutenant junior grade Joe Tormolen used a diet card to obtain a tray of food from a food synthesizer in one of the 's recreation rooms. ()

In 2268, Nurse Christine Chapel passed out several of these cards to the Starnes Exploration Party orphans so they could have whichever ice cream flavor they wanted, such as coconut and vanilla, chocolate wobble and pistachio, or peach. ()

See also 
 Food card

Background information 
The diet card was visually identified in conjunction with the script notes for "The Naked Time" final draft script.

The cards used in "And the Children Shall Lead" were identified on-screen only as "cards", while the props themselves were identified in the shooting schedule as "program blocks".

it:Menù dietetico
Victual technology