Cooking with Alkali

Researcher: Alec Borsook Overview Alkali cooking techniques are largely underexplored in contemporary kitchens. This post is a basic overview of what alkalis are, what they do, and how they can be useful.A notable fact is that calcium hydroxide (Ca(OH)2), one common alkali, can be made quite easily in kitchens by burning eggshells, whose calcium carbonate is then converted into calcium oxide (quicklime, CaO), which can be ‘slaked’ with water to become calcium hydroxide. Acidity comes in many delicious forms. Much of the research performed here at the Lab concerns our unending search for them, from our exploration of sour wild things to our investigations of the possibilities of lactic and acetic acid fermentations. Acids can balance flavours, providing brightness and cutting through richness, or they can make you pucker your lips in a delight bordering on pain. But what about their chemical opposites, the alkalis? In continuation of some previous … Read more

Bee Bread

by Josh Evans Honeybees (Apis mellifera) have mastered feats of chemical engineering as various as they are alchemical. Their most well-known substances are of course honey, their concentrated, stable, hive-warming energy source, and wax, their pliable, moisture-proof structural material. Yet there are others which nowadays are known primarily only to beekeepers and practitioners of traditional medicines. Propolis (or ‘bee glue’) is used as a structural sealant and potent antimicrobial agent within the hive and carries a beautiful resinous aroma. Royal jelly is what all brood—the immature larvae and pupae—are first fed before being weaned onto honey (unlike the future queen, who becomes differentiated by being fed only royal jelly) and it has remarkable moisturising, emulsifying and stabilising properties. Even the brood are used as food in many cultures around the world and have a delicate savouriness with hints of raw nuts or avocado. Each substance is fascinating in its own … Read more

Ramson and friends

by Avery McGuire Spring is upon us. The sky is a vast and brilliant blue. The sun is bright and blinding, and lingers longer each evening. Flowers speckle the first grass with yellow, white and periwinkle. The air is sweet with new life. The city is awake. People are out, their cheeks blushed, wrapped in blankets with hot coffee or cold beer in hand, soaking up every golden drop of sun no matter how chilly it may still be. Step out your front door and watch the world budding. There are new shoots and buds, delicate young leaves, and the very first flowers – many of which are not only safe to eat, but healthy and delicious! Ramson Why Wild Plants Like Ramson Naturally Satisfy Our Hunger There’s compelling science behind why foraged plants like ramson (wild garlic) and other spring edibles often leave us feeling more satisfied than cultivated … Read more

Bog butter: a gastronomic perspective

by Ben Reade. This paper was first published in ‘Wrapped and Stuffed: Proceedings of the Oxford Symposium on Food and Cookery 2012′. The complete Proceedings is available from Prospect Books; a video recording of the presentation of this paper can be found here (starting at 33 minutes), and a podcast about it here. People dig for peat. Once dry, this peat burns hot and lets off an evocative smoke that brings to mind the cooking and heating methods of yesteryear. The peat-cutters harvest their quarry from dark brown, water-logged quagmires. Occasionally, these accidental archeologists discover artifacts left by people long gone. One such artifact, among the most commonly unearthed items from the watery, misty bogs of Ireland and Scotland, is known as ‘bog butter’. Due to the frequency of these findings and its mysterious nature, it has been fairly well studied from an archaeological perspective, perhaps the most thorough investigation being … Read more