# Method:
01 - Cut 6 large lemons in half lengthwise. Juice and gently scoop out the flesh, keeping shells intact. Trim a thin slice from the bottom of each shell so they stand upright. Refrigerate shells until needed.
02 - Combine heavy cream, caster sugar, and lemon zest in a medium saucepan. Heat over medium flame until it reaches a gentle boil, stirring to dissolve the sugar. Simmer for 3 minutes without boiling over, then remove from heat.
03 - Stir freshly squeezed lemon juice into the warm cream mixture. Let it thicken slightly. Allow mixture to cool for 10 minutes, then strain to remove zest for a smooth texture.
04 - Carefully pour the cream mixture into the prepared lemon shells, filling close to the rim.
05 - Refrigerate filled lemon shells for at least 3 hours, or until the cream is firm.
06 - Sprinkle about 1 teaspoon caster sugar evenly over each set cream. Use a kitchen blowtorch to caramelize the sugar until crisp. Let the brûlée harden for 2 to 3 minutes before serving.