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.
STERLIZING EQUIPMENT: Place a rack in the bottom of a pot, add canning jars, and fill with water to cover jars by 1-2. Bring water to a boil, add rings and lids, and boil for at least 10 minutes (leave equipment in water until needed). Dip tongs and a table knife in boiling water for 30 seconds.