Although using a kitchen torch is the best and easiest technique to make this dish, you can still make it without one. Instead of using the torch, you can use your oven broiler. Let the custard chill as usual. Then turn on the oven broiler. Place the ramekins on a baking sheet and put them on the top oven rack as close to the broiler as possible. Keep your eye on them in the oven as you broil for 5-10 minutes or until the sugar caramelizes.