Step 1Bring the milk, cream, vanilla and half of the sugar to boil in a saucepan over medium heat. Add the lavender, turn off the heat and infuse for 1 minute.
Step 2In a separate bowl, combine the yolks and remaining sugar. Prepare a bowl of ice water; set an empty bowl on top of the ice water and place a strainer on top of the empty bowl.
Step 3Whisk about one-fourth of the milk-cream mixture into the yolk mixture, being careful not to cook or scramble the eggs. Bring the milk-cream mixture back to a boil and stir in the tempered yolk mixture. Cook, mixing continuously with a wooden spoon, until the mixture coats the back of the spoon, about 3 minutes. Strain the mixture into the empty bowl and chill about 1 hour, stirring occasionally.
Step 4Freeze in an ice cream maker according to the manufacturer's directions. (Makes about 2 1/2 cups.)
Step 1Heat the oven to 200 degrees. Line a baking sheet with parchment paper; set aside.
Step 2Combine the sugar and egg whites in the top of a double boiler set over, but not touching, simmering water and whisk until the mixture is warm to the touch, about 5 minutes.
Step 3Place the mixture in an electric mixer and beat on high speed until stiff, but not dry, peaks form, 5 to 6 minutes. Place the mixture in a pastry bag fitted with a medium-size round tip. Pipe 1-inch teardrops onto the baking sheet; you should have about 50.
Step 4Bake the meringues until hard but without color, about 3 hours. Let cool, then store the drops in an airtight container.
Step 1Beat the cream and powdered sugar together until medium-stiff peaks form. Place in a pastry bag with a star tip.
Step 2Blend the raspberries, granulated sugar and lemon juice on high speed until smooth. Strain. Taste and add more sugar or lemon juice, if needed.
Step 3Place a scoop of lavender ice cream on each of 8 plates. Pipe the whipping cream entirely over each scoop to form a dome. Place the strawberries on top, alternating the strawberries with the meringue drops. Make a rim of raspberry coulis around the dome. Garnish with lavender sprigs. Serve immediately.