Is this chocolate cake recipe from Yotam Ottolenghi's baking cookbook Sweet the world's best?

Ingredients

• 250g unsalted butter, at room temperature and cut into 2cm cubes
• 200g dark chocolate (70 per cent cocoa solids), chopped into 2cm pieces
• 1½ tsp instant coffee granules, dissolved in 350ml boiling water
• 250g sugar
• 2 large eggs, lightly beaten
• 2 tsp vanilla extract
• 240g self-raising flour
• 30g Dutch-processed cocoa powder, plus 1½ tsp, for dusting
• ¼ tsp salt