Gotta come here early if you want anything! I've been coming here on and off since it opened as its a bit of a trek. But I had a random craving for this before the new year and so I came by on December 31 to find an EMPTY display case, the store was sold out mid-afternoon! Well I guess it can only be expected on December 31, but I came here for two wkends in a row after later afternoon only to find the store had closed early - probably because it was sold out. Finally got my fix last week! My favorite is the chocolate doughnut thing with the sesame at the bottom. I'm usually not a fan of sesame, but the crunch it gives really goes well with the dark chocolately mouse on top.
Yuzu - very light and yummy dessert. Personally I feel like it could be less cream and more of the fruit inside given the price.
Chestnut - in line with all the reviews below. It has a strong chestnut taste and very good value for your money.
I've had the chocolate croissant, mushroom croissant and salami croissant. While they all tasted great, I felt that the mushroom croissant really set Duo apart from all the other patisseries. The chocolate and salami croissant were great but nothing I hadn't had before.