Step 3. Take the crisco shortening out of the can and put it in the big pot. Melt over medium heat. Remove from heat. Measure the 5.5 cups water and put it in the pail. Take out 2 TBSP of red devil and put it down the drain. Dump the remaining 18 oz can into the water. Stir. Be Careful. This will heat up. Do not inhale the fumes.