Leave the hog brains, which you can obtain at a meat market, in a hot, sunny place for two to three days. Leave them uncovered, as exposure to direct sunlight and heat will cause them to sour and expedite the process. You can use a plastic tub, trash can or any other large container to hold them.
Grate the cheese. You can use a meat grinder for this task if necessary. You can use whatever type of cheese you can acquire cheaply and you can grate it at any point prior to mixing it with the rest of the ingredients.
Place all the ingredients into a large container such as a trash can. Only fill the container one-third full. This is because the bait will expand inside the container. Place a lid securely on the container to keep out animals and flies. Place the container in a warm location and stir it every other day for two weeks. Divide the bait into as many quart jars as you need, filling them only halfway due to expansion. Seal the jars tightly (to contain the odor) and store them someplace where the smell will not be an issue (such as an outdoor shed.)