Preheat oven to 180°C and butter a 24cm ring cake tin generously. This cake needs to come out of the tin easily so just go for it.
Place starter, milk, sugar, EVOO, eggs, vanilla, lemon oil, zest and juice into the Thermomix bowl and blend 6 sec/speed 6.
Add remaining cake ingredients and mix 22 sec/Interval/dough setting. Finish combining with the aid of a spatula if necessary.
Scrape into prepared tin and tap gently on the bench to level the top.
Bake 40 minutes until springing back when you touch it in the middle of the largest part of the cake. It should also be golden.
Cool in the tin on a wire rack, completely before removing.
To make the glaze place the sugar, butter and lemon zest into the Thermomix bowl and blend 10 sec/speed 10. Add lemon oil, and lemon juice and blend until well combined. Drizzle over cold cake and decorate with edible flowers if using. This cake improves in flavour over a few days.