Quantify cross-flavor content to compute bi-∞ limits for Doritos–Taco and similar pairs

Develop a reliable measurement method to quantify the mass fractions that characterize cross-flavored products such as Doritos Locos Tacos and taco-flavored Doritos, and use these measurements to numerically evaluate the bi-∞ pair defined by the coupled recursion for Doritos and tacos.

Background

The paper notes that several real-world food pairs (e.g., Doritos and tacos; ramen and Pringles) satisfy the structural conditions for the bi-∞ construction because each product contains the other as a flavor.

Although the coupled recursion applies and the limits are theoretically computable, the authors point out that practical numerical evaluation requires a method to measure how much of one food is present in the other.