The results are summarized here using the combined percentage of responses to High or Medium quality. In the middle were a colmated cork and a twin top agglomerated cork. 2A-C show the detailed responses. Presumably the rankings are a manifestation of concern about ease of removal and replacement of the longer cork. This may be a manifestation of an opinion mentioned by some consumers that a good cork has pores in it .
Washes refer to the rinsing procedure and color for each cork.
The light peroxide washes possessed a natural color. The chlorine wash was several shades lighter in color. Colmated Corks describe corks that have undergone a process in which the pores and imperfections have been filled with cork material. Part Three of the interview consisted of an examination of what perceived benefits are offered by natural cork Most participants, both consumer and restaurant staff, volunteered that cork serves the primary purpose of sealing the wine. This study was commissioned by an anonymous California winery and enacted by an independent research organization.