Lemon & Tarragon Olive Oil Cake

150 g - sugar	Mash : Use the sugar to mash the lemon zest and tarragon together, for example in a mortar and pestle	Whisk : Whisk together	🔀Mix : slowly stream in until emulsified	🔀Mix : dry into wet in 2 additions	🔥Bake : at 350°F / 180°C for 30~40 minutes	Brush : while cake is still warm	Glaze : when cake is completely cool
3 g - tarragon
1 u - lemon zest
2 u - egg
180 ml - olive oil
240 ml - buttermilk
1 b - lemon juice
0.5 t - salt	🔀Mix
190 g - flour
1.5 t - baking powder
0.5 t - baking soda
100 g - water	Form simple syrup : on medium heat	Simmer : for 3 minutes	Cool and strain
100 g - sugar
3 g - tarragon
100 g - icing sugar	Form icing : dissolve cream into sugar until desired consistency
3~5 b - heavy cream