Prepare the pears by washing them thoroughly, removing the cores, and cutting into chunks. No need to peel them if you’ll be straining the mixture later.
Juice the lemons until you have 1 cup of fresh juice. Avoid bottled lemon juice as it lacks the bright flavor essential to this recipe.
Combine pear chunks, lemon juice, honey, and water in a blender and process until completely smooth, about 60-90 seconds.
Strain the mixture through a fine-mesh sieve into a pitcher, pressing with a spoon to extract maximum liquid. This removes any fibrous bits for a silky-smooth texture.
Add the heavy cream and vanilla to the pitcher and stir gently until fully incorporated. The mixture will take on a beautiful pale yellow color.
Chill thoroughly for at least 1 hour, or add ice cubes if serving immediately. The flavors meld and deepen when cold.
Serve in tall glasses with additional ice, and garnish with mint leaves and thin pear slices if desired.