Eggs. The eggs were won as a prize by a classmate of mine, but he didn't have a kitchen. I offered to put them to good use. Vinegar. 5% acidity Container big enough to submerge egg in. This wine glass was the perfect size. Also, in the background -- my first attempt at making sushi (with smoked eel). It turned out ok, I guess. Necessary to keep hungry experimenter from eating all the subject material.