dnd 5e – How can I scale down fire breath for use as a Creme Brulee torch?

I am starting a campaign in which my character is an accomplished and award-winning chef, and in an egg-themed competition won a dragon egg with a pseudodragon. I’ve talked with my DM, and he’s letting me replace the “Sting” ability with the ability to shoot small fire breaths. The entire point of this is to allow my chef character to be able to cook and use the dragon breath as a creme brulee torch.

The fire breath I am using in this example to scale down is for the Adult Red (or Brass) Dragon, whose actions state:

Fire Breath (Recharge 5-6): The Dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity saving throw, taking 63 (18d6) fire damage on a failed save, or half as much damage on a successful one.

I don’t want to necessarily do damage to my tasty creations, but I would like for it to be a living being that assists me in my culinary creations.

How can I scale fire breath for use as a Creme Brulee torch?