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In a large bowl, add the 1 cup (200 g) organic cane sugar and the zest of 2 sumo citrus (or 2-3 tablespoons of any citrus). Rub them together between your fingers until the sugar smells very fragrant.

Add the 1 cup (227 g) softened unsalted butter and 1/2 cup + 2 Tbsp (125 g) brown sugar to the bowl with the fragrant sugar mixture. Beat until light and fluffy.

Mix in the 1 egg, 1 egg yolk, 1 Tbsp (15 g) vanilla bean paste, 2 Tbsp (30 g) sumo citrus juice, and 1/2 tsp cornstarch until smooth.

Stir in the 2 1/4 cups (284 g) all-purpose flour, 1 tsp baking soda, and 1 tsp fine sea salt until a soft dough forms.

Swirl in 2-3 tablespoons of black sesame paste into the dough. Scoop large balls of dough (about 3 Tbsp each) and space them well apart on the baking sheet.

Cover the dough and refrigerate for at least 12 hours (this improves flavor and texture).

Heat oven to 350°F (175°C). Line baking sheets with parchment paper. Roll dough balls one by one in white sugar with some black and white sesame seeds sprinkled in.

Bake for 10 minutes total. After the cookies puff up (around minute 6–7), lift the pan a few inches and bang it firmly on the oven rack every 1–2 minutes to create ripples (this is referred to as the Sarah Kieffer pan-banging method).

As soon as cookies come out of the oven, place a round cookie cutter around each cookie and swirl gently to make perfect circles.


In a large bowl, add the 1 cup (200 g) organic cane sugar and the zest of 2 sumo citrus (or 2-3 tablespoons of any citrus). Rub them together between your fingers until the sugar smells very fragrant.

Add the 1 cup (227 g) softened unsalted butter and 1/2 cup + 2 Tbsp (125 g) brown sugar to the bowl with the fragrant sugar mixture. Beat until light and fluffy.

Mix in the 1 egg, 1 egg yolk, 1 Tbsp (15 g) vanilla bean paste, 2 Tbsp (30 g) sumo citrus juice, and 1/2 tsp cornstarch until smooth.

Stir in the 2 1/4 cups (284 g) all-purpose flour, 1 tsp baking soda, and 1 tsp fine sea salt until a soft dough forms.

Swirl in 2-3 tablespoons of black sesame paste into the dough. Scoop large balls of dough (about 3 Tbsp each) and space them well apart on the baking sheet.

Cover the dough and refrigerate for at least 12 hours (this improves flavor and texture).

Heat oven to 350°F (175°C). Line baking sheets with parchment paper. Roll dough balls one by one in white sugar with some black and white sesame seeds sprinkled in.

Bake for 10 minutes total. After the cookies puff up (around minute 6–7), lift the pan a few inches and bang it firmly on the oven rack every 1–2 minutes to create ripples (this is referred to as the Sarah Kieffer pan-banging method).

As soon as cookies come out of the oven, place a round cookie cutter around each cookie and swirl gently to make perfect circles.
