Like most recipes of that era, these instructions are not detailed. For instance, this recipe does not state the temperature of the oven. I'd say 375F. I haven't cooked this cake yet. If you try it, please let me know how it turns out!
Apple CakePut into a basin half an ounce of grated unsweetened chocolate, two cupfuls of brown flour, a handful of currants and half a teaspoonful of cloves. Make a cupful of sauce from sour apples and stir into it a large teaspoonful of bicarbonate of soda, add three parts of a cup of sugar and half a cup of sour milk. Then pour in the other mixture, beat well and bake in a modern oven for nearly an hour.