Chromexcel. One of my favorites, and probably my single favorite if I had to choose one. The picture above gives some idea of how long the formula has been around (and this journal is full of different trials and doesn’t even contain the original, standardized recipe). Whether because it’s right, or because we’re just terribly stubborn, we’ve left the processes and formulas for many of our leathers largely unchanged. We have had to substitute some of the components that were traditionally used in small quantities – whale oil was replaced with another marine-creature derived oil, one that’s more available and not controversial.