Demonstrate the Value of Patience
Do not blacken for once. Get close to the orange coals; stay far from the flames. Rotate. Rotate. Rotate till you think your wrist will fall off. Then, and only then, admit to your kids that fluffy, evenly browned marshmallows—like making a bed with hospital corners—are a rabbit hole of perfection you don' t want to go down. Advise them to read a book or graduate from college instead.