These ingredients are usually formed into suet cakes you can purchase, or you can make your own. Though cakes are the most-common form of commercial suet for birds, it's available in other shapes ...
There are some excellent ready-made versions available (including ones made with vegetarian suet) but nothing beats homemade, and it’s very simple to make. Mincemeat often requires an overnight ...
To make the suet pastry, put the flour in a large bowl and stir in the suet, parsley and salt. Stir in enough water to make a soft, spongy dough - you'll probably need around 250ml/9fl oz.