I had a new item at Yi Soon and it may be one of my favorite pastries in Boston, period.
It was a coffee roll. Can't really do it justice with a description.
Coffee sponge cake, very moist, just the right sweetness, strong coffe taste. Filled with a delicate amount of whipped cream, and toasted, very fresh, crunchy, candied walnuts. The whole is much better then the sum of its parts.
It was sublime. As good as any pastry I have eaten in Boston, and in it's own way up there with pastries I have eaten in Paris. I take my pastries very seriously and this is just a remarkable sweet.