CHAPTER 1
Preserving Methods for Pickling, Demystified In the early 1800s, Napoleon, a historically influential supporter of good eating with a love for pickled foods, offered a huge prize to the person who could find a solution to long-term food preservation as a way to carry food for his troops. Nicholas Appert, a French candy maker, won that prize when he discovered that a glass bottle filled with food, sealed with cork and wax, and then boiled, resulted in an airless and sealed environment that preserved food from spoilage. It worked, though no one knew why until Louis Pasteur discovered microorganisms and their role in food spoilage. By the mid-1800s, with the invention of mason jars and paraffin wax, the boiling water method set the standard for long-term, shelf-stable food. Home preserved foods became commonplace, and vinegar pickling became the preferred method. The rest is a story of modern history.
A little primer on food acidity: Almost any food can be pickled. It is the act of adding vinegar (or salt, if fermenting) that elevates the acid level of that food and makes it safe from the four food spoilers: enzymes, bacteria, molds, and yeasts. We measure the acidity level of a food using the pH scale. A pH measurement describes the measure of hydrogen ion in an aqueous (water-based) solution. For food preservation purposes, if a food’s pH level is lower than 4.6, it is considered high in acid; if it is higher than 4.6, it is low in acid. Fruits are naturally high in acids, with limes and lemons containing the highest amount, with a pH of around 2, and tomatoes the lowest, with a pH much closer to that 4.6 number (we normally consider tomatoes high in acid, but on a pH scale compared to other fruits, it’s just not so).
Pickled to Please
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