Light eloquent orange flavour from puffy, medium dense and richly flavoured sheep's milk ricotta within a soft crumbly shell. One of the best pastries I've had in London -- the texture of the filling is gorgeous, perfectly calibrated. It's a traditional Italian Easter treat, so get it soon before it runs out.
BTW, I think their gelati has improved quite a bit; they were very good when they started, and it's even better now -- the textures have hit a density that I like -- soft but stiff, without any chewy or stickiness to it. Milk chocolate was astoundingly good.