Food and drink prohibitions In Argentina and other Spanish language countries bull's testicles are served as "huevos de toro" or 'bull's eggs'. In some regions, such as the European Union, brains and other organs which can transmit bovine spongiform encephalopathy ("mad cow disease") and similar diseases have now been banned from the food chain as specified risk materials. Although eating the stomach of a goat, cow, sheep, or buffalo might be taboo, ancient cheesemaking techniques utilize stomachs (which contain rennet) for turning milk into cheese, a potentially taboo process. Newer techniques for making cheese include a chemical process with artificial rennet. This means that
Pay what you can or socially oriented uses, based more on "ability" to pay, while "pay what you want" is often more broadly oriented to perceived value in combination with willingness and ability to pay. Giving buyers the ability and freedom to decide what they are willing to pay for can be very successful, this eliminates the issues of conservative pricing. Buyers are attracted to the fact they are not obligated to pay a certain price for a product, this eliminates all issues of an item becoming overpriced in the consumer's eyes, the customer can then make their own judgment on what the product