Combine Dry Ingredients: In a large mixing bowl, whisk together the strong white bread flour, wholemeal flour, cocoa powder, instant yeast, salt, and dark brown sugar. You'll notice the mixture taking on a lovely light brown hue, flecked with darker cocoa, and it should smell subtly sweet and earthy.

Add Wet Ingredients: Create a well in the centre of the dry ingredients. Pour in the warm water, black treacle, honey, and rapeseed oil. Mix with a wooden spoon or your hands until a shaggy, somewhat sticky dough forms. It will look quite dark and feel moist.

Knead the Dough: Turn the dough out onto a lightly floured surface. Knead for 8-10 minutes until it becomes smooth, elastic, and less sticky. The dough should feel soft and pliable, and if you gently stretch a piece, it should form a thin membrane without tearing easily (the windowpane test).

First Rise (Bulk Fermentation): Lightly grease a clean bowl with a little oil. Place the dough in the bowl, turning it once to coat. Cover the bowl with cling film or a damp tea towel and leave it in a warm place for 60-90 minutes, or until the dough has doubled in size. You'll observe it becoming visibly puffy and light, and when gently poked, it should spring back slowly.

Shape the Loaf/Rolls: Gently punch down the risen dough to release the air. If making a loaf, shape it into a tight oval or round. If making rolls, divide the dough into 12-16 equal pieces and shape each into a smooth ball. For an authentic touch, you can lightly mist the shaped dough with water and roll it in oats or cornmeal for a textured crust.

Second Rise (Proofing): Place the shaped loaf or rolls on a baking tray lined with parchment paper. Cover loosely with cling film or a damp tea towel and let them rise for another 30-45 minutes in a warm spot, until noticeably puffed up and light. They should look visibly fuller and feel airy when gently pressed.

Bake the Bread: Preheat your oven to 190°C (170°C fan/Gas Mark 5). Bake the loaf for 25-30 minutes, or the rolls for 18-22 minutes, until they are deep golden brown and sound hollow when tapped on the bottom. The crust will be firm to the touch, and the kitchen will be filled with a rich, malty, and slightly sweet aroma.

Cool: Transfer the baked bread to a wire cooling rack immediately. Allow it to cool completely before slicing and serving. This allows the internal structure to set properly, resulting in a perfectly soft crumb.