Grease & parchment line your cake pans & preheat the oven to 350°F
First prepare the lemon cake recipe by combining all the ingredients together in the food processor (or in a large mixing bowl to whisk by hand)
Process to a smooth batter then divide the batter evenly amongst your prepared cake pans
Bake for about 25 minutes or when you insert a toothpick it yields moist crumbs not raw batter
Cool in the pans until you can safely touch them without burning your fingers then flip the cakes out onto a cooling rack
Prepare the Italian Buttercream recipe according to the recipe instructions for that recipe
Meanwhile combine the water & lavender flowers together in a small sauce pot and steep for about 30 minutes
Cool to COLD then strain through a cheesecloth or mesh strainer pressing out all the juice from the flowers, then add to the buttercream recipe at the last stage of mixing
Next prepare the lavender syrup by steeping lavender flowers with the water, sugar & lemon zest in a small sauce pot & bring to a low boil then turn off the heat & steep for 10 minutes. Strain & reserve the syrup for later
Now assemble the cake as shown in the video tutorial