Bad analogy. The chef is actually making the cupcake - they should know all the ingredients. The doctor isn’t making the vaccine, they just receive and administer it. A doctor is closer to the manager of your grocery store: They get a shipment of cupcakes from the cupcake company and then sell them to you; they don’t know all the ingredients.
Everybody, including doctors, can look up the ingredients on the box or on the CDC website. Example given, the Pfizer one:
https://www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines/Pfizer-BioNTech.html
link doesn't work
LOL! There's that systemic racism again
Ingredients for pharmaceuticals are on the label same as food
Bad analogy. The chef is actually making the cupcake - they should know all the ingredients. The doctor isn’t making the vaccine, they just receive and administer it. A doctor is closer to the manager of your grocery store: They get a shipment of cupcakes from the cupcake company and then sell them to you; they don’t know all the ingredients.