The regional table / Maryland
Maryland Crab Soup, Red and Built on the Shells
Two soups in Maryland answer to the name crab soup, and the older books call only one of them that.
Mrs. B. C. Howard's Fifty Years in a Maryland Kitchen, printed in Baltimore and readable on Internet Archive in the Lippincott edition of 1881 and again in the fifth revised edition of 1913, carries four soups under the heading Crab Soup, and not one of them is this one. Three are milk. The fourth is red, and begins by frying three broken-up crabs with two slices of middling, but it is thickened with a table-spoonful of butter rolled in one of flour and finished with a tea-cup of new milk or cream. The rest of Maryland print agrees. The Queen of the Kitchen, a collection of old Maryland family receipts published in 1874, opens its Crab Soup by boiling a quart of milk. Mrs. Charles H. Gibson's Maryland and Virginia Cook Book of 1894 prints two, both of them cream. The Church Cook Book, published in Baltimore in 1908 for the benefit of church work and charity, prints one: the meat of six hard crabs, one quart fresh milk, butter and flour worked smooth together, boil fifteen minutes. Go looking for the red soup under its own name in a nineteenth-century Maryland book and it is not there.
It is in those books under a different name, and that is where the beef comes from. Howard's Okra Soup with Crabs opens with the line this whole recipe rests on: take a quarter of a peck of okra and boil in beef soup, two pounds of beef to three gallons of water, a ham bone added is a great improvement — then a quarter of a peck of tomatoes and one dozen hard crabs boiled and picked. A few lines above it, her Okra Soup puts in six boiled hard crabs, a little broken up, shells and all, but not picked. The vegetables are assembled a few pages later in her Shin Vegetable Soup: half a shin, two or three slices of bacon, a quart of tomatoes, okra, three or four potatoes, some lima beans, corn, in fact any vegetables that are procurable. Her plain Beef Soup boils two pounds of beef three hours and then takes a small head of cabbage cut in quarters, turnips, okra, tomatoes, carrots. So the beef stock under a Maryland crab soup is not a shortcut somebody took in a hurry. The beef soup was there first, the crab was put into it, and what changed later was only the name on the pot.
Why this version works
Nothing thickens it. Every milk crab soup in these books is thickened with butter rubbed into flour. This one is not thickened at all. What little body it has comes from potato starch and from three hours of reduction, and a roux would only coat the vegetables and dull the Old Bay.
Beef under crab, on the record. People taste this soup and assume a seafood house cheated with a beef cube. The 1881 Baltimore text says the opposite: the okra soup that carries crabs is boiled in beef soup, two pounds of beef to three gallons of water. Beef gives a long, savoury body that crab shells cannot make on their own, and crab on top of it reads as crab rather than as fish stock.
The shells are half the flavour. Howard's White Crab Soup is six crabs to a gallon of water, legs and fins cracked and put in with the fat from the backs, boiled an hour and a half before any picked meat goes near it. Bodies and claws simmered in the broth for half an hour and then thrown away is what separates this from a vegetable soup with crab in it.
The crab meat goes in last and barely cooks. The meat was steamed at the packing house and is cold and cooked when you buy it. Five minutes in hot broth off the heat warms it through; ten minutes of boiling shreds it into the soup and you lose every piece you can see.