This early reference notes this stage is unwholesome [Markam]. Medium/medium rare were introduced about this time. Originally only of eggs: slightly or imperfectly cooked, underdone. And indeed, among winged creatures they can eat with pleasure wood pigeons still running with blood and scarcely touched by fire.' Bruyerin advocated the middle way, warning that there would be a penalty to pay for eating either half-raw or 'melting' meat.
“I have no right to keep that to myself,” he exclaimed. Being a missionary was the ultimate calling—nothing could be more noble or admirable.
That medieval French cooks too this warning seriously and rarely roasted their beef is evident in the large stocks of beef bouillon that our recipes imply was always on hand for ready use in other preparations." ---Early French Cookery: Sources, History, Original Recipes and Modern Adaptations, D.
If the ignorant cook were to subject beef to a roasting, so further drying its already dry nature, this could be quite dangerous to the unfortunate person who was to eat it later, and could even put him or her at risk of an attack of melancholia or a bilous upset.
Late 19th century food scientists examined meat doneness, offering temperature/time recommendations according to type of meat, cut, and method of cooking. Meat thermometers (1930s) took the guesswork out of judging doneness. When today we ask for our steak well done, medium or rare, we are repeating a choice that the Renaissance writers revived from Hippocratic writings.
Like their 17th century predecessors, early 20th cooking texts warn against rare meat. Black and blue (aka "Pittsburgh style" steak surfaces in print in the 1970s. In 1626 Pierre Duchatel noted the physical reactions to be expected from meat prepared in each of the thre ways '(1)...well-Boiled meat is suitable to the digestion. (2)...those meats that have been medium boiled or medium roasted add moderately to vigor and digestion.