"because there is a desire of the heart for good foods and because monetary loss may result of mixtures etc" he says that there are two problems with the matter of food- one is the desire of the heart- a person wants to eat tasty foods, and the second is monetary loss- meaning if by mistake some milk or butter or cheese (anything forbidden) fell inside the pot and is more than one sixtieth of the contents- if it were less the one sixtieth- it would become annulled- if milk fell into a meat pot and there was sixty times the amount of the milk in the contents of the pot , the potatoes and the soup and the meat is at least 60 times the amount of the milk that fell inside- so that milk gets cancelled out-but if it's not 60 times, you must take everything and throw it out- so this is a monetary loss, so he says - these are two reasons that may cause a person to have the will not to overlook these matters. 