My guess is that you are not cleansing your bowels sufficiently leaving some partially digested food to ferment and cause the production of a fair amount of gas.
A coffee retention enema should be considered a cleansing enema. Instead use a soapsuds, baking soda or suitable cleansing solution to do a better job of cleansing. Then take your coffee enema for detoxification. By the way sauerkraut will produce a lot of gas.
Propaul
PS For more info on enemas please read my blog titled “My challenge”, link below