The blackline collection utilizes a natural reactive process to give them their distinctive dark finish. No pigments are used to create this black color. This unique technique makes use of the tannic acid inherent in white oak to develop a deep, durable, food-safe dye; the source of which comes from within the wood itself.
As with most natural processes, some variation in color is to be expected. Natural dyes will "wear" over time developing a rich patina that is special to the object and how it is being used.