How to make mincemeat tarts using your own home-canned mincemeat
Mix the salt and the flour; blend the shortening in; add just enough cold water (a few tablespoons at a time) to get the dough to form a ball. (To be clear, don't add all the water if it is not all needed.) Once the water has been added, you run the risk of gluten developing and making the crust tough, so handle it no more than necessary and above all don't knead it.
Mincemeat tarts. www.healthycanning.com