A guest (that I don't know) left some sort of Chinese pastry at my place. It's shaped like an oblong loaf, about four inches wide, ten inches long, and 1.5 inches tall. The whole thing is fairly chewy/glutenous and dense. The outside skin is an opaque white, and it seems to be filled with a translucent starch that in appearance sort of reminds me of balls of tapioca, but smaller. There are nuts inside it as well. The flavor of the confection is sort of sweet/savory, and I think it might have lard in it. Any ideas what it is?