What type of agar is blood agar?

trypticase soy agar (TSA) mixed with sheep blood (blood agar)

its one of the most used agar types for identifying bacteria, because most bacteria can grow on it,

a few examples are Bacillus and Stahpylococcus
(known for food poisoning)

the agar also alows you to see if the bacteria does hemolysis on blood