This section is from the book "Economical Cookery", by Marion Harris Neil. Also available from Amazon: Economical Cookery (1918).
4 tablespoons grated unsweetened chocolate 2 cups (1 lb.) sugar 1 cup (1/2 pt.) milk
2 tablespoons (1 oz.) butter 1/2 cup (1/4 lb.) seeded raisins 1/2 cup (2 ozs.) chopped nut meats 1 teaspoon vanilla extract
Mix chocolate with sugar in a saucepan, add milk and butter, and stir continually until it forms a soft ball when tried in cold water, or reaches 240° F. by thermometer. Remove from fire, add raisins, nuts, and vanilla, beat until thick, and pour into a buttered pan. Cut into neat squares when cool.
Another Method. Stir two cups light brown sugar and one half cup milk in saucepan, then place pan on fire, add four tablespoons butter, pinch of salt, and two squares of unsweetened chocolate; stir all the time and when it hardens in cold water, or reaches 250° F. add one teaspoon vanilla extract and remove from fire; beat until it begins to thicken, then add one tablespoon milk and one half cup chopped nut meats, and beat a few seconds longer; pour into greased pan and when cool mark into neat pieces.