A process for cooking a food in oil andor fat is provided. Pressure in the chamber is then sensed to determine a first venous refill time. The method also includes urging a die having a plurality of equally spaced protrusions into a surface of the cylindrical casing to form bellows in the cylindrical casing. For example, assume that the predefined set consists of one S&P 500 futures, one NASDAQ futures, one S&P Midcap 400 futures and one Russell 1000 futures and the threshold is three. A mixture of the first solution and the second solution is spread onto the substrate by centrifugal force of the rotating member. The effectiveness of this system can be determined by comparing the number of devices distributed with the number of sales incentives redeemed.