Garlic as an Antimicrobial
Is it true that garlic oil or spices can make undercooked hamburger safe to eat?
ANSWER - While some spices and herbs have antimicrobial effects, there is no scientific evidence that adding these substances to hamburger will make it safe to eat if undercooked. There is no substitute for proper cooking.
Antimicrobial Agents and Chemotherapeutic Effects Of Garlic Clarified



