Final answer:
Equipment used for refrigeration or hot-holding must be properly maintained and in good repair to prevent foodborne illnesses by keeping foods at safe temperatures. Materials like stainless steel, while common, are not a requirement. Built-in temperature displays are beneficial but not mandated.
Step-by-step explanation:
The equipment used for refrigeration or hot-holding of potentially hazardous foods must be properly maintained and in good repair to ensure safe food storage conditions and to prevent the growth of harmful microorganisms. Keeping food at safe temperatures is essential to avoid foodborne illnesses. Refrigeration (below 4 degrees C or 40 degrees F) slows microbial metabolism and growth, while hot-holding (above temperatures where bacteria can thrive) keeps prepared foods ready for consumption without allowing bacteria to multiply.
It is not necessary that the equipment be made of a particular material, such as stainless steel, or have a specific aesthetic, such as being colorful. However, incorporating materials like glass, stainless steel, and white porcelain can help project a more hygienic appearance. Though not required, having a built-in temperature display on refrigeration and hot-holding equipment is incredibly beneficial for monitoring and ensuring the safe temperature of the food within.