De leguminibus : recipe cicera et pone ad distemperandum per unam noctem in lexiuio bene salsato. Mane autem, abluas bene cum aqua tepida. Postea, decoque ea in aqua tepida et, in fine decoctionis, pone sal et oleum uel aliam pinguedinem.
LIBER COQUINA, 21
Of legumes: take chickpeas and place them in well-salted lye for a night to distemper them. In the morning, wash them well with tepid water and at the end of the cooking, put in salt and oil or another kind of fat
LIBER de COQUINA, 21
Chickpeas were considered a paragon of nutritious food, and Du Fait de Cuisine gives us one recipe intended for the sick. These were first prepared for a 14th Century French event where none of the other primary sources discuss them, but an adjacent source, Liber de Coquina, gives us many options for their preparation. I have taken the most interesting and delicious elements from each of these options to create this specific dish.
Of note, LC gives us instructions to "distemper in well-salted lye." I do not feel comfortable recommending the use of Lye (Sodium Hydroxide) or Soda Ash (Sodium Carbonate) to the average cook, however a modern resurgence of pre-soaking chickpeas in a strong base is taking place, and so I do recommend the modern method of using Baking Soda (Sodium Bicarbonate.) The end result is incredibly tender chickpeas which blend to a wonderful, rich smoothness.
Safety Note: If using Baked Baking Soda, Soda Ash, or Lye for soaking, ensure safety precautions are followed as noted in the recipe.
While the Chickpeas are finished cooking, caramelize the Onion well with the first measure of Olive Oil and the second Bouquet Garni of Thyme