All you need is some fat ~ I use bacon fat. I never throw out bacon drippings, it's something I learned from my grandmother and I could never shake it. I let them cool a bit and spoon them into a mason jar that is always in the back of my fridge.
Where were we? Right, suet for pig-birds.
3/4 cup bacon fat (approx.)
1/2 cup peanut butter (anything you have, they are NOT picky)
~Melt these together. (I often just use the big fry pan I used for the bacon, that way I only have to wash it once.)
6 cups wild bird seed (approx.)
~Mix in enough wild bird seed to fill the pan but you can still see a fine layer of liquid over the top.
Use a big spoon to put into containers.
I kept all my old suet containers so I just re-use those.
If you don't have anything that shape you could cut off the bottoms of old milk cartons and fill those. They are waxed and pop out easy once the suet is chilled.
When looking online for a recipe with more precise amounts I came across this one: