Pepperoni dominates as the most popular pizza topping. A whopping 36% of people order pepperoni on their pizzas, according to research by business advisor Brian Roemmele. Roemmele researched point-of-sale data from 604 pizza locations across the United States. Here's the chart of his findings, which was first posted to Quora: Brian Roemmele/Quora
Nutrient Agar is a complex medium because it contains ingredients with contain unknown amounts or types of nutrients. Nutrient Agar contains Beef Extract, Peptone and Agar in water. Beef extract is the commercially prepared dehydrated form of autolysed beef and is supplied in the form of a paste.
Agar is a gelatinous medium that provides nutrients and a stable, controlled environment for bacteria growth. Most bacteria will grow well using nutrient agar, but some more fastidious bacteria prefer tryptic soy agar. To prepare agar plates, just heat agar and pour it into a sterile petri dish. Swab along any surface to test (your mouth, the bathroom counter, etc.) and then lightly smear in a zig-zag pattern on the surface of the agar plates. Signs of bacteria growth should show within 1-2 weeks. Getting started: