This is the recipe that is in my grandma's cookbook from 1921 (at least, that is the date she wrote on the front page). I have no idea where she got this recipe or if it was one of her own. Similar orange cookies where made like this, as well as lemon cookies and lime cookies. This recipe produces a cookie that is cake-like. The last time I made these was on Mother's Day in 2012 for my mom (who has dementia). She remembered these:
Grandma's Sour Cream Chocolate Cookies
1/2 c shortening
2 c brown sugar (packed)
1/2 c cocoa
1/2 c sour milk, buttermilk, or sour cream
1 tsp baking soda
2 eggs, beaten
1 tsp vanilla
3-1/2 c AP flour
1/2 c walnuts (optional)
1. Cream shortening and sugar together.
2. Add cocoa, eggs, vanilla to creamed mixture.
3. Beat for 2 minutes.
4. Add sour milk/sour cream and vanilla. Beat for 30 seconds until blended.
5. Sift together: flour and baking soda.
6. Add dry ingredients to wet, mix lightly, stir in walnuts. Chill for 2 hours.
7. Break off bits of dough, flatten with the bottom of a glass. Bake for 10 minutes at 375.
This was powdered sugar, melted chocolate, butter, and you play this by ear. When the cookies are cool, frost. Or use a boiled chocolate frosting. Always use dark chocolate.