01 - Combine milk and lavender buds in a medium saucepan. Heat over medium heat until just simmering. Remove from heat, cover, and let steep for 15 minutes to extract floral flavors.
02 - Strain the milk through a fine mesh sieve to remove lavender buds, pressing gently to extract maximum flavor. Return the infused milk to the saucepan.
03 - Whisk together egg yolks and sugar in a separate bowl until pale and slightly thickened, creating a smooth ribbon consistency.
04 - Slowly pour warm lavender milk into the egg yolk mixture while whisking constantly to prevent curdling and temper the eggs.
05 - Return mixture to saucepan. Cook over low heat, stirring constantly with a wooden spoon until custard thickens and coats the back of the spoon (approximately 170°F). Avoid boiling.
06 - Remove from heat. Stir in heavy cream and vanilla extract. Add purple food coloring if desired for visual appeal.
07 - Pour custard through a fine sieve into a clean bowl. Cool to room temperature, then cover and refrigerate for at least 4 hours or overnight to develop flavors.
08 - Churn the chilled mixture in an ice cream maker according to manufacturer's instructions. Transfer to a lidded container and freeze until firm, approximately 2-4 hours.
09 - Serve scoops of lavender ice cream garnished with extra lavender buds or edible flowers for an elegant presentation.