What is primarily used to create a flame in flame effects?

The primary element used to create a flame in flame effects is a combustible material designated for that purpose. This is because flame effects rely on materials that can combust and sustain a flame, which is essential for visual and atmospheric effects in performances. The use of designated combustible materials ensures that the flames produced are controlled, safe, and effective for the intended display, while also adhering to safety regulations outlined in standards such as NFPA 160. These materials are specifically chosen for their ability to create the desired flame characteristics in a theatrical or entertainment environment.