Directions
<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Preheat your oven to 180°C (160°C fan). Grease and line three 20cm round cake tins with baking parchment. If you only have one or two tins, you can bake in batches, but keep the remaining batter cool while waiting.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>In a large bowl, cream together the butter and sugar until very light and fluffy, about 5-7 minutes. This extended creaming process incorporates air, which is crucial for a light texture. The mixture should become noticeably paler in color.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Add the eggs one at a time, beating well after each addition. If the mixture looks like it's beginning to curdle, add a tablespoon of the measured flour between eggs to stabilize the emulsion.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>In a separate bowl, whisk together the flour, baking powder, and salt. Fold this dry mixture into the wet ingredients in three additions, alternating with the milk, beginning and ending with the dry ingredients. This method prevents overmixing while ensuring even incorporation.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Gently fold in the rosewater, vanilla extract, and 75g of the chopped pistachios until just combined. The batter should be smooth but be careful not to overmix as this will develop gluten and result in a dense cake.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Divide the batter evenly between the prepared tins (approximately 450g of batter per tin if measuring). Smooth the tops with an offset spatula and give each tin a gentle tap on the counter to release any large air bubbles.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Bake for 25-30 minutes or until golden brown. The cakes are done when they spring back when lightly touched and a skewer inserted into the center comes out clean. The edges should just be starting to pull away from the sides of the tin.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Allow the cakes to cool in their tins for 10 minutes before turning out onto a wire rack to cool completely. If the tops have domed, you can level them with a serrated knife once cool.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>For the buttercream, beat the butter in a large bowl until very pale and fluffy, about 5 minutes. The prolonged beating incorporates air, making the frosting lighter and easier to spread.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Gradually add the sifted icing sugar, one spoonful at a time, beating well between additions. Once all sugar is incorporated, add the rosewater and milk, beating until the frosting is smooth and silky. If using, add a tiny amount of pink food coloring to create a subtle blush color.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>To assemble, place one cake layer on a serving plate or cake stand. Spread a generous layer of buttercream over the top. Sprinkle with a tablespoon of the remaining chopped pistachios. Place the second cake layer on top and repeat.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Place the final cake layer on top, then cover the entire cake with a thin layer of buttercream (this is your crumb coat). Refrigerate for 20 minutes to set this layer, which will seal in any crumbs and make the final coating smoother.</li><li class="MethodStepper"><h4 class="step-title">Step 13</h4>Apply the remaining buttercream in a thicker layer, smoothing the sides with an offset spatula or bench scraper. You can create decorative swirls on top if desired.</li><li class="MethodStepper"><h4 class="step-title">Step 14</h4>Decorate the cake by pressing the remaining chopped pistachios around the base and sprinkling some on top. If using, scatter dried rose petals over the top for an elegant finish. The contrast between the green pistachios and pink rose creates a beautiful visual effect.</li><li class="MethodStepper"><h4 class="step-title">Step 15</h4>Allow the cake to come to room temperature for at least 30 minutes before serving to ensure the best flavor. The cake will keep well in an airtight container for up to 3 days, though the pistachios may soften slightly over time.</li></ol>