Let me hasten to assure you that as a rule I am very proud of my pie crusts. The post below was an anomaly, really! And just to prove it here's my latest one, made with a different batch of lard. It rolled out flawlessly. I was in a hurry, so I didn't gussy it up with egg wash or a sugar sprinkle. My main problem with making pies is I almost always almost forget to put some chips of butter on the top of the filling before covering with the top crust... Sure enough, I had to peel this one back and slip them in.
It's an apple pie a la James Beard's American Cookery, to which I added a few shards of rosemary.
When rendering lard do not add water. That first batch of lard was unnecessarily greasy, wet, and not malleable. Cut up the fatback or leaf lard, put into a pot, cover it, and put in a 250 degree oven for a couple of hours. Tip the cover during the latter part of the cooking to let the steam out. Strain into bottles and store in the fridge or the freezer. And don't throw away those cracklings!