2 tablespoons unsalted butter, melted, for brushing pan
5 large eggs, separated
3/4 cup sugar, divided
3/4 cup extra-virgin olive oil
1 tablespoon grated Meyer lemon zest
plus 3 tablespoons Meyer lemon juice (see Cooks' note, below)
1 cup cake flour (not self-rising)
1/2 teaspoon salt
1/2 cup plus 1 tablespoon sugar
3 tablespoons all-purpose flour
1/2 teaspoon salt
1 teaspoon grated Meyer lemon zest plus 3/4 cup Meyer lemon juice
1 large egg yolk
1 tablespoon unsalted butter
1 1/2 cups heavy cream
3 tablespoons mild honey
1/2 tablespoon dried lavender blossoms
Equipment: an 8-inch springform pan
Garnish: confectioners sugar