Preheat oven to 180℃. Line a 9by5 loaf tin with a baking paper.
In a bowl, beat lemon zest, butter and sugar until light.
Add eggs and vanilla and beat until well combined.
Add flour, baking powder and salt. Gently stir into batter.
Add ground oistachios and almonds and gently fold it in the batter. Do not overmix.
Finally add in milk and combine.
Pour the batter into the pan and bake for 35-40 minutes until toothpick inserted comes out clean.
Slice and enjoy