How To: Use a Food Torch

Torching sugar that’s sprinkled on the surface of a fudge slab creates a crisp, caramel shell that adds taste and visual appeal. Learn how safe and easy it is to use a food torch.


For demonstration purposes, Karla, Calico’s Master Fudge Maker, uses the BonJour® Professional food torch. Since directions vary depending on the brand and model, follow the instructions for your particular torch.

Step 1:

After your fudge slab has set, remove it from the pan and set it on a counter with plenty of clear space around the slab.

Step 2:

Peel back the pan liner from the slab to avoid accidentally igniting the paper with the torch.

Step 3:

Sprinkle the amount of sugar indicated in the recipe evenly across the surface of the slab.

Step 4:

Release the safety lock on your food torch, ignite the flame, and switch the flame into the locked position.

Step 5:

Hold the torch about 2 to 3 inches above the surface and move the torch around the perimeter of the slab. Try to move steadily and quickly. If you linger, the sugar will burn.

Step 6:

After the perimeter is completed, wave the torch back and forth across the center of the slab to finish caramelizing the sugar.

Step 7:

Once the sugar on the surface of the slab is caramelized, turn off your torch and set it aside to cool. Let the fudge slab set for about an hour since fudge will soften in response to the heat from the flame.