Java Burn is a tasteless powder that is added to coffee. It does not affect the taste or smell of coffee in any way. In fact, many people say that Java Burn actually makes their coffee taste better. Java Burn also does not affect the caffeine content of coffee. It is safe to take Java Burn with any type of coffee, including decaffeinated coffee. However, it is important to note that Java Burn is not a coffee substitute. It is a supplement that is designed to be taken with coffee. If you have any concerns about how Java Burn will affect your coffee, please talk to your doctor.