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.
Glucose Salts Agar (GSA) : is a simple, defined medium. Only organisms that can make all their cellular components from glucose and inorganic salts are able to grow on this medium. Tryptic Soy Agar (TSA) : is a rich, undefined medium containing products of an enzymatic digest of protein and soy product.