This cake is as light as its colour (for a black sesame item), so go ahead and keep that slice to yourself, no sharing required! The diplomat cream filling is the same black sesame custard used for their sister company Koki Tamagoyaki's puffs, recipe adjusted to thicker consistencies to sandwich between the spongey cake layers. The streusel crumbs are too sugary for my liking, but some people might prefer that since the cake itself isn't too sweet.
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What I love about Nesuto is their tea pairing with the desserts! I had the Dong Ding which is a medium roast oolong from Nantou, Taiwan. This compliments the goma cake which is quite singular in taste profile, so you can appreciate the contrast between the mild fruitiness of the tea and the toasty-nutty black sesame.