How can you preserve food for a display like in restaurants?
Put the food in refrigerator, warmer, freezer that have glass
window for display. It can last for 2-5 hours if considering the
quality, freshness, and taste of the food. Almost all of the food
contain preservative except organic food. Most restaurants today
will serve and display FRESHLY-COOKED food to attract more
customers. Other restaurants put impressive realistic fake food for
a display.