Mini Toasting Kit is a bundle product and can only be purchased together with any 12-cube marshmallows or 4-cube marshmallows. What’s better than a toasted oooey-gooey marshmallows? MORE toasted oooey-gooey marshmallows, of course! Each burner can last for approximately 2-3 hours if allowed to burn continuously, or you can, of course, close the lid to put off the flame and save it for next time.