Some microbes grow better in meat type media. They are found in decaying meat, intestines, dead animals. Remember, all measurements are grams per liter of final medium. That is true of every page on this web site.
Any liquid medium is called a broth.
After we add agar to it, we call it an agar. Also remember to autoclave every medium for 15 minutes at 15 pounds in cotton stoppered test tubes. Such media may be suitable for weeks or years. That is because some bacterial enzymes can cleave ammonia off amino acids. These deaminization enzymes can't do this while the amino acid is in an intact protein or peptide.