Viennese Chocolate Torte Passover

This Viennese chocolate torte is a Passover-friendly take on a classic European nut torte. Ground walnuts, kosher-for-Passover cake meal, and potato starch stand in for wheat flour, and eight separated eggs do the structural lifting through whipped whites folded into a chocolate-yolk base.

The Viennese signature comes from the orange. Fresh juice and zest weave into the batter, an apricot-orange filling sits between the layers, and the glaze melts chocolate into warm orange juice for a glossy, citrus-forward finish. Apricot preserves and orange create the same bittersweet brightness you’d find in a sachertorte, but adapted to Passover’s flour ban.

Baking low and slow keeps the egg structure tender and prevents the torte from crowning and cracking. After baking, the cake hangs upside down in its tube pan to set, the same trick used for angel food, so the airy crumb doesn’t collapse on itself.

Pro Tips

• Bring the eggs to room temperature before separating. Cold whites won’t whip to full volume, and that volume IS the cake’s structure.
• Beat the whites in a clean, dry bowl. Even a trace of yolk or fat will keep them from forming stiff peaks.
• Fold the yolk mixture into the whites in three additions, gently. Aggressive folding deflates the air you just whipped in.
• Cool the torte upside down completely before attempting to remove from the pan. Pulling it early collapses the crumb.

Variations

• Swap walnuts for ground almonds or hazelnuts. Hazelnut + chocolate is especially Viennese.
• Add a tablespoon of orange liqueur (kosher for Passover Sabra works) to the apricot filling for extra perfume.
• For a non-Passover version, substitute the cake meal and potato starch with ½ cup all-purpose flour and skip the dietary specifications.