Original Receipt in 'The Forme of Cury' by the Chief Master-Cook of King Richard II, c1390 (Cury 1390)GALYNTYNE
Take crusts of Bread and grind them small, do thereto powder of galyngale, of cinnamon, of ginger and salt it, temper it with vinegar and draw it though a strainer & present it forth
This precursor of bread sauce appears in cookbooks from the 14th to 17th Centuries (AW 1591, etc).
From the 18th Century 'Galantine' came to mean a dish of veal, chicken, or other white meat, in a set bone jelly.