Black Sesame Dark Chocolate Ganache Tart Step-by-step instructions

Before you start

Before starting, ensure the baked black-cocoa tart shell is completely cool and still in the tart pan. Measure all ingredients and set them nearby. Chop the dark chocolate finely and place in a heatproof bowl.

Have the sesame paste and honey measured and ready. Prepare your refrigerator space so the assembled tart can chill undisturbed for at least two hours. If using a metal tart pan, consider placing it on a baking sheet for easy handling.

Instructions

Layering the Base

1. 1Prepare the Sesame Layer
   Place the baked black-cocoa tart shell on a flat work surface. In a small bowl, stir together the roasted black sesame paste and honey until smooth and spreadable. Using an offset spatula, spread the sesame mixture evenly over the bottom of the tart shell, reaching all the way to the edges. Set aside while making the ganache.
   Look for The sesame layer is smooth, glossy, and covers the entire base.
   Tip If the sesame paste is too stiff, warm it gently for a few seconds to make spreading easier.
2. 2Chop the Chocolate
   Finely chop the 70% dark chocolate and place it in a heatproof bowl. The finer the chop, the more evenly the chocolate will melt when the hot cream is poured over it. Ensure there are no large chunks, as they can cause lumps in the ganache.
   Look for Chocolate pieces are uniform and about the size of rice grains.
   Tip Use a serrated knife for a clean chop without shattering the chocolate.

At the end of this phase, the tart shell has a smooth, evenly spread layer of black sesame paste and honey. The mixture is glossy and aromatic, with a deep, nutty scent. The chocolate is chopped and ready in a bowl. The cream is measured and the saucepan is on the stove. Everything is prepared so the remaining steps move quickly and without interruption.

Making and Pouring the Ganache

3. 3Heat the Cream
   Pour the heavy cream into a small saucepan. Place over medium heat and bring to a gentle simmer, stirring occasionally to prevent scorching. The cream should be steaming and just beginning to bubble around the edges, but not boiling vigorously. Remove from heat immediately.
   Look for Bubbles appear around the edge of the pan and the cream is steaming.
   Tip Do not let the cream boil hard, as that can curdle the milk proteins.
4. 4Make the Ganache
   Pour the hot cream over the chopped chocolate. Let it sit undisturbed for 2 minutes to melt the chocolate. Then, using a whisk, stir gently in small circles starting from the center until the mixture is smooth and fully combined. The ganache should be glossy and thick enough to coat a spoon.
   Look for Ganache is smooth, shiny, and no streaks of cream or chocolate remain.
   Tip Whisk gently to avoid incorporating air bubbles; a spatula can also be used for the final stir.
5. 5Pour the Ganache
   Let the ganache cool slightly until it reaches about 95°F (35°C). Pour the warm ganache over the sesame layer in the tart shell. Tilt the pan gently to level the surface, or use an offset spatula to smooth the top. The ganache should cover the sesame layer completely.
   Look for Ganache is evenly distributed and the surface is smooth.
   Tip Pour in a slow stream from the center to minimize bubbles.

The ganache is silky, smooth, and glossy, with no lumps or streaks. It has cooled to about 95°F, and pouring it over the sesame layer creates a clean, even surface.

The tart looks polished, with the dark chocolate layer contrasting against the black shell. The kitchen smells of toasted sesame and rich chocolate. The tart is now ready for the refrigerator.

Chilling and Finishing

6. 6Chill the Tart
   Place the tart in the refrigerator and chill for at least 2 hours, or until the ganache is fully set and has a mirror-like sheen. The tart should be firm to the touch and slice cleanly when cut. Do not rush this step, as the ganache needs time to set properly.
   Look for Ganache is firm, glossy, and no longer moves when the pan is tilted.
   Tip Chill on a flat, stable shelf to avoid disturbing the surface.
7. 7Garnish and Serve
   Remove the tart from the refrigerator. Sprinkle the toasted white and black sesame seeds over the top in an even layer, or in a decorative pattern. If using, place small pieces of gold leaf on the surface. Slice with a sharp knife dipped in hot water and wiped dry for clean cuts. Serve chilled.
   Look for Sesame seeds adhere to the ganache, and the tart slices cleanly.
   Tip For neat slices, cut with a hot knife and wipe between cuts.

After two hours in the refrigerator, the ganache is firm and has a mirror-like sheen. The tart is cold to the touch and slices cleanly. The sesame seeds and gold leaf add a beautiful finishing touch, creating a stunning contrast against the dark surface. The tart is ready to serve, with each slice revealing distinct layers of shell, sesame, and ganache.

Common mistakes

One common mistake is pouring the ganache over the sesame layer while it is too hot, which can cause the sesame paste to melt and blend into the chocolate. Let the ganache cool to around 95°F before pouring.

Another issue is over-whisking the ganache, which incorporates air bubbles and makes the surface look pitted. Stir gently in a circular motion. Finally, not chilling the tart long enough results in a soft, messy slice. Respect the two-hour minimum.

How to tell it’s done

The tart is done when the ganache is fully set and has a firm, glossy surface that does not move when the pan is tilted. The edges should be slightly lighter in color and the center should be smooth and shiny.

When sliced, the ganache should hold its shape and the sesame layer should be visible. If the ganache is still soft or sticky, return the tart to the refrigerator for additional chilling. Serve chilled for the best texture.