My understanding of TURF analysis is that, in general terms, it creates optimal portfolios so that the greatest proportion of consumers finds at least one of the options appealing. Is there any study, theory, analysis, way to calculate, etc. that considers that the consumer may desire multiple choices from the portfolio? In other words, can I create a portfolio of say 12 items such that the greatest proportion of consumers finds at least 3 of the items desirable? Think perhaps of a buffet where a person will eat at the buffet if it has at least three choices that they like, but will not eat there if it has only two or fewer.