Lazy Person's Chocolate Cake

For the wet cake mix:

175ml olive oil, not overly strong, plus extra for the tins

2 eggs

175ml buttermilk

170ml boiling water

5g/1tsp instant coffee

For the dry cake mix:

125g caster sugar

125g light brown sugar

80g cocoa powder

230g plain flour

5g/1tsp sea salt flakes

10g/2tsp bicarbonate of soda

5g/1tsp baking powder

For the malt chocolate ganache:

150g 70 percent cocoa solids chocolate, chopped

50g 55 percent cocoa solids chocolate, chopped

Pinch of sea salt flakes

300g double cream

1tbsp malt extract (alternatively use black treacle, maple syrup or honey)