Stuffed and Double Stuffed

Cecilia Vogel, Elizabeth Hinds, and Ahmed Abuzant
Department of Physics and Astronomy, Augustana College, Rock Island, IL 61201

Abstract:
The name given to Double Stuf Oreos seems to imply that they have double the stuffing of a regular Oreo cookie. We wondered whether it was just a name or if there really were twice as much filling in a Double Stuf Oreo. In earlier research, we compared Double Stuf Oreos to Mint Oreos, but the only conclusion we could draw from that research was that mint filling is more dense than the filling used in Double Stuf Oreos. We have now continued our research by comparing a regular Oreo cookie's filling to that of a Double Stuf Oreo. We have compared both the volume and the mass of filling in this research. Both results are consistent with the hypothesis that there is twice as much filling in a Double Stuf Oreo as in a regular Oreo cookie.

I. Introduction
In order to determine if the Oreos were doubly stuffed, we measured both the mass and the volume of filling, comparing the values for Double Suf Oreos to that of regular Oreo cookies.

II. Experimental Setup
To determine the mass of filling in a cookie, we first measured the mass of a filled cookie, then scraped the filling from the cookie, and measured the mass again. The difference is the mass of filling.

To determine the volume of filling, we began with a known volume of water in a graduated cylinder. After scraping all the filling from a cookie into the water, we again measured the level of water in the cylinder. The difference in water levels was the volume of filling. We added all the filling at once and quickly took a water-level reading in order to avoid the possibility of the filling absorbing
water, as this would make our water-level reading too low.

III. Results
We found that the regular Oreo filling had a mass of 3.0 g +/- 0.25 g and a volume of 2.55 +/- 0.35 ml. The Double Stuf Oreo's filling, on the other hand, had a mass of 6.3 g +/- 0.1 g and a volume of 5.55 +/- 0.1 ml. As a result, the mass of the Double Stuf filling is 2.1 +/- 0.3 times the mass of the regular Oreo filling, and the volume of the Double Stuf filling is 2.2 +/- 0.4 times the volume of the regular
Oreo filling.

IV. Discussion
Our results lead us to conclude that Double Stuf Oreos are indeed doubly stuffed, to within the error of our measurements. It also seems that the filling is the same in both cookies, as expected, or at least both fillings have approximately the same density.