Sister's stew is a thick creamy white seafood stew the is served on the three islands known as the Three Sisters. It can be made with leeks, carrots, barley, turnips white and yellow, pepper, salt, clams, as well as chunks of cod and crabmeat in a stock of heavy cream and butter. Red crabs, spider crabs, and conquerors can be included.
A Dance with Dragons
When he is brought before Lord Godric Borrell on Sweetsister, Davos Seaworth is served sister's stew in a trencher hollowed out of a stale loaf. Davos has tasted sister's stew before, as it is served in every inn and tavern of the Three Sisters. Godric insists this stew made by his granddaughter Gella is better. Davos is grateful for the stew, as he should now have guest right.
Davos notes that there are stranger spices than salt in this particular stew. Godric confirms it has saffron from Qarth and cracked black pepper from Volantis. Lord Borrell laughs, explaining he had taken pepper, cloves, nutmeg, and saffron off a sloe-eyed maid.
It was the sort of stew that warmed a man right down to his bones, just the thing for a wet, cold night.—thoughts of Davos Seaworth
I won't eat spider crab, except in sister's stew. Makes me feel half cannibal.