Because it is mostly peanut butter, it is a very special treat for all birds. We have grosbeaks, orioles, woodpeckers, sparrows, warblers and chickadees that love eating these cakes. Even the hummingbirds come by on occasion for a taste test. Of course, the chipmunks and squirrels also love the peanut butter cakes.
Place prepared tomatoes in a saucepan and cover with water. Heat to a boil and boil gently for 5 minutes. Add lemon juice or citric acid to canning jars along with 1/2 teaspoon salt to each quart jar, if desired. Pack hot jars with hot prepared tomatoes and fill with boiling water leaving -inch head space.
Place the number of jars you'll need on top of the rack in your stock pot. Fill pot (and jars) with water to cover, place a lid on the pot and bring it to a boil. Put your lids in a small saucepan and bring them to the barest simmer on the back of the stove. While the canning pot comes to a boil, prepare your product.