Step by step

1. In order, combine milk, egg yolks, lemon juice, sugar, cornflour, butter and salt in blender jar of the KitchenAid ARTISAN Power Plus Blender. Secure lid and turn dial to Speed 1. Slowly increase speed to high (Speed 10 or 11). Blend until completely smooth for about 30 seconds.

2. Fill medium bowl with ice cubes and water; have small heatproof bowl ready. Transfer milk mixture to small saucepan, place over medium heat and whisk continuously until thickened to pudding consistency for 4 to 5 minutes. Transfer curd to small bowl and nest bowl in ice bath. Cover mixture with plastic wrap, pressing it directly onto surface. Set aside until very cold, about 30 minutes.

3. Rinse and dry blender jar and return to blender base. Add cream to blender jar. Secure lid and turn dial to Speed 1. Slowly increase speed to medium (Speed 5 or 6). Blend until cream is whipped and voluminous for 10 to 20 seconds.

4. Add lemon curd to whipped cream in blender jar and stir with the Flex Edge tamper to break up thick curd slightly. Pulse 4 to 6 times on low until curd and cream are evenly blended. Do not over-blend or mousse will be too thin.

5. Divide evenly among 6 to 8 small serving bowls or custard cups. Serve right away, or cover and chill in refrigerator for about 2 hours before serving. Mousse will keep for up to 1 day.

6. VARIATIONS

   Ginger: Add 1 teaspoon grated peeled fresh ginger to blender with egg yolks. Proceed as directed. Lavender: Add 1⁄2 teaspoon dried edible lavender blossoms to blender with egg yolks. Proceed as directed. Basil: Add 1 teaspoon chopped fresh basil to blender with cream. Proceed as directed.