Campfire Coals
Wait for the flames to die down to a steady orange glow before you start. Coals give the most even, forgiving heat of any method: hold the marshmallow at this distance and rotate slowly.
Stack the chocolate on the graham cracker before the marshmallow ever sees heat.
Coals and embers caramelize the sugar. Open flame just chars it and leaves soot.
Stay 3 to 4 inches back and turn every few seconds for an even shell.
The marshmallow's own heat melts the chocolate, so sandwich it the second it's off the fire.
Ed and I started keeping the fire pit going most nights once the house got quiet, and s'mores turned into our version of a nightcap. There's a real difference between the marshmallow you scorch out of impatience and the one you actually roast on purpose, and it comes down to two things: where you hold it, and whether you press it onto the chocolate while it's still hot enough to melt something.
A campfire, a gas burner, and an oven broiler all roast a marshmallow differently. Match your distance and timing to the source and you skip the classic problem: black on the outside, cold sugar in the middle.
Wait for the flames to die down to a steady orange glow before you start. Coals give the most even, forgiving heat of any method: hold the marshmallow at this distance and rotate slowly.
Turn the burner to low and hold the skewer well above the visible flame tip. Any closer and the soot blackens the outside before the inside ever warms through.
Line a sheet pan, space the marshmallows out, and broil on low with the door cracked. Stay right there. A broiler goes from golden to torched in about the time it takes to check your phone.
The order you build a s'more in decides whether the chocolate actually melts or just sits there as a cold square. This is the sequence that works every time.
There's no wrong answer here, it's genuinely a matter of preference. But knowing what's happening at each stage helps you stop the roast exactly when you want it.
Most bad s'mores fail for one of these reasons, and every one of them is fixable next time you're at the fire.