You had to give her a Cheese Sandwich while Uncle Joe beside her is finishing his last bite of Roast Beef. This is a common phenomenon in manual operations. The end result of this practice is food waste. The extra may not get dumped in the garberator initially but some of it may eventually get there. The net result of that phenomenon is money in the garbage.
Food waste is a cost.
Again, here lies an opportunity to benefit from food service software. Many food service programs will generate production reports indicating the correct amounts to make. Thus, feeding the garberator is avoided leading to food dollar and staff time savings. There is a variety of programs available today ranging from the very simplistic to sophisticated. Some companies use very new technologies and others do not.