Step 1

Grease and line a Swiss roll pan, roughly 9 x 13 inches. Preheat the oven at 350°F (180°C).

Step 2

Using a hand whisk or stand mixer, whisk the eggs and sugar for 6 to 8 minutes until fluffy and pale. When lifted, the batter should leave a trail.

Step 3

Crush the cardamom pods lightly to remove the small black seeds, crush the seeds in a mortar and pestle or by pressing down on them with the side of your knife, and add them to the flour in a bowl.

Step 4

Sieve the flour into the egg mix, and gently fold it all in, taking care not to deflate the whipped eggs.

Step 5

Pour the mix into the prepared cake pan, and bake for 12 minutes or until done.

Step 6

Sprinkle a little icing sugar on a clean kitchen towel, then flip the hot cake on top. Roll the cake in the towel, and set it aside to cool completely.

Step 7

Mix the coffee and water and cool completely.

Step 8

Chop the chocolate into small pieces and warm it in the microwave for 30-40 seconds, stirring halfway through. Once melted fill in the piping bag and drizzle the melted chocolate on the acetate sheet in a design of your choice, whether it's stars, flowers, leaves, or any pattern, and let them set in the fridge. If you can't find acetate sheets, use baking parchment instead.

Step 9

Whisk the cream, 2 tablespoons of sugar, and cooled-down coffee in a bowl until you get soft peaks.

Step 10

Unroll the sponge and spread 3/4 of the coffee cream on top. Start rolling the sponge from the short edge using the kitchen towel underneath, making sure the filling stays inside, and place it on the serving plate.

Step 11

Use the rest of the cream to cover the top of the cake and sprinkle some pistachios on top.

Step 12

Very carefully peel the chocolate flowers from the acetate sheets and place them on the cake just before serving. Enjoy it fresh!