Orange balm
Make a simple syrup with the sugar and water, boiling the mixture until it reaches 122°C (252°F). Deglaze with the juice and zest of three blood oranges.
Blood orange lace tuile
Melt the butter, let cool, then add the rest of the ingredients. Make circles on a baking sheet and bake at 180°C (350°F) for 5 or 6 minutes.
Dark chocolate-tonka feuillantine
Melt the chocolate in a water bath. With a whisk, add in the pralines, salt and tonka bean. Fold in the feuillantine with a spatula. Place the mixture between two sheets of baking paper and roll out very thinly. Place in freezer.
Blood orange crémeux
Heat the juice in a saucepan. In a mixing bowl, beat together the egg yolks and sugar, then add the cream and custard powder. Pour the warm juice over the mixture, stir, then pour back into the saucepan. Cook until the mixture thickens. Remove from heat, then stir in the butter and zest. Combine well and place in the fridge.
Assembly
Form a quenelle with the crémeux and place it on top of the chocolate-tonka feuillantine. Drizzle orange balm over the quenelle, then garnish with tuile and some blood orange segments. To finish, lightly dust the the dessert with blood orange zest and grated tonka bean.