Why would anyone in their right mind be pro-fillers? They dilute taste and hence, they dilute life. Well guess what, that is yet another evil role of mayonnaise: The Great diluter of Life . Case and point: horse radish sauce. If you are fan of the hot roast beef sandwich on a Kaiser roll, you will probably ask for some horse radish. (which is worthy of the utmost respect) Unfortunately, some restaurants may secretly replace their horse radish with something called “horse radish sauce.“ So you need to ask up-front if they are diluting their horse radish because, and I do not mean to start a wide spread panic here, it is diluted with mayo!!! If the dilution take place in-house, then you still might be able to receive 100% pure Columbian horse radish before it gets infected.