The reason BBQ tastes better is due to a chemical reaction called the 'Maillard reaction'. 

To explain the appealing taste of BBQ, it's not just a simple 'grilled flavor', but a unique taste created by chemical reactions. The distinctive flavor we enjoy in direct grilling, known as 'smoky flavor', is thanks to the Maillard reaction.

When meat is grilled over high heat, the sugars and amino acids inside the meat combine and turn brown, starting to produce complex and rich flavors. Specifically, the sugars in the meat's marinade, as well as those in onions and garlic, break down under high heat, creating a complex and savory taste, which strongly releases its unique flavor. The smoke generated during the cooking process adds to this, creating a deep and rich flavor.

This flavor is the umami we experience in BBQ, that is, the 'smoky flavor'. The fragrant taste that comes from the slightly charred surface of the meat is the essence of the smoky flavor.

Moreover, this smoky flavor does not only come from the surface of the meat. The smoke and soot produced during the direct grilling process also influence the taste, creating a richer and more appealing flavor that blends with the deep flavor of the meat. The smoke seeps into the meat, making its flavor deeper and more unique.

Direct grilling is characterized by cooking meat or ingredients directly over the fire, where flames and heat come into direct contact with the ingredients, creating flavors. During this process, the charred substances produced from the surface of the meat create the smoky flavor. Additionally, the smoke and soot generated from the charring of the meat also affect the taste, making the flavor deep and strong. The smoky flavor generally mixes with the juices of the meat or seafood, producing a savory and salty taste, which is one of the attractions of direct grilling.

Ultimately, the smoky flavor of BBQ is a natural result of this scientific reaction and cooking process. Therefore, the reason the smoky flavor is special and appealing to people when eating BBQ is due to this chemical change, along with the experience of directly encountering fire and smoke while tasting it.

Thanks to this unique flavor, BBQ is always a delicious food that people look forward to!