Leviticus 11 contains a zoo’s worth of animals. The hyrax and monitor lizard. The katydid is there, as is the gecko. And it ends: “You must distinguish between the unclean and the clean, between living creatures that may be eaten and those that may not be eaten.”
Dietary restrictions are woven into religious texts, the Old Testament and the New, the Koran, the Vedas and the Upanishads. Some are mercifully practical, as in the law of necessity in Islamic jurisprudence: “That which is necessary makes the forbidden permissible.”
This month, Tyson announced that it is investing in a company that will launch plant-based shrimp early next year, raising a curious question. Will it be kosher? The short answer is its ingredients — which mimic the verboten crustacean with a proprietary algae blend — could well be both kosher and halal. Once the product launches, the company will seek certification so Orthodox Jews and certain Muslim groups that avoid shellfish can enjoy a shrimp cocktail, scampi, a po’ boy or ceviche.
And yet, in this era of plenitude and choice and disruptive technology, what is permissible, what is forbidden and what is flouting the letter of religious law? The food system is in flux, the rise of plant-based meats and the promise of cell-cultured meats bending categories such that legislation, ideology and theology are scrambling to keep up.