A case study towards an exploration of what, or how, memory could be exhibited and understood within glass practice. The introduction of external actors illustrated the concept of memory – triggering a memory, or response – in glass. Using the methodology of research in design and Proust’s poetic recollection of is experience with involuntary memory as a metaphor to examine the reactions of glass with contaminants under familiar circumstances, I was able to examine, thought empirical research, the past’s presence within the present. Wile memory to some may remain to be assumed as purely human experience, the case of memory, specifically involuntary memory, was explored though material. Glass and its contaminants were the key players in the network and proved – just like the human experience – cable of reacting and responding, respectively, and triggering an involuntary memory.