In a small bowl, mix the coconut flour, ground almonds, cinnamon, baking soda and salt. Set aside.<br></br>
Preheat the oven to 175 C. Generously grease a 6x4 mini loaf tin with coconut oil. The cake sticks a little so don't skip the greasing.<br></br>
In a mixing bowl, whisk the egg, honey, milk, oil, vanilla and vinegar. Add the coconut flour mixture and stir to combine. Fold in the chocolate chunks.<br></br>
The batter will be thick as coconut flour is very absorbent, but if it's too thick to spread into the pan, add a splash of milk to help thin it out.<br></br>
Spoon immediately into the prepared cake tin and smoothen the top.<br></br>
Bake for 25 to 30 minutes, rotating the tin halfway through baking, until browned on top and a toothpick poked into the center comes out with only a few moist crumbs.<br></br>
Allow to cool for 15 minutes, then loosen the sides with a blunt knife and remove the cake from the tin. Let it cool completely before slicing.<br></br>
If the pieces seem fragile, chill the cake for 30 minutes. Happy eating!