BBQ pellets are 100% natural hardwood, but that doesn’t necessarily mean the pellets are 100% of the type of wood listed on the bag. Different types of wood have different densities, burn at different rates, and produce different amounts of heat and smoke. The addition of oak allows every flavor to burn at a similar rate and with a similar heat output, providing consistency from cook to cook.
When people talk about pellet flavors, they're referring to the type of wood used to make the pellets. Each variety has its own unique taste and can be paired with specific foods to highlight and complement their natural flavors.