Old German Clay Pipes are high-quality clays that are manufactured using the same techniques that were used centuries ago. Each pipe is cast in molds that are between 100 and 200 years old. Most modern clay pipes are slip-casted, which produces a pipe that is very delicate and fragile. Old German Clay Pipes casts each pipe for a solid, sturdy and old-world quality clay that is second to none. For a true clay pipe experience, Old German Clay Pipes offer a variety of styles to choose from.  
​You should avoid building much of a cake in a clay pipe as the cake can expand and cause the bowl to crack. Here's the proper method to eliminate the cake according to the manufacturer:
Fire up some charcoal in your grill, or get your gas grill going. Remove the stem (if it has one), and put the bowl in the coals or place it above the gas flame. Give the pipe about 15 to 20 minutes. In that time, the cake should burn off. Remove the bowl using tongs and allow it to cool and the cake should be gone. Repeat, if necessary. Please note - black clay pipes will turn white after doing this.​​