Very Rich, Very Thin Chocolate Lace Cookies
Unsweetened chocolate squares
Melt the butter and chocolate in the top of a double boiler. Combine with egg and rest of ingredients.
Drop by scant teaspoonfuls on greased cookie sheets. The finished cookies will be 3 to 4 inches in diameter so space them accordingly.
Bake in preheated oven of 325~ for about 12 minutes. Watch carefully to prevent burning. When nearly cool, remove from the cookie sheet with spatuala. (I use the metal type.Hint-press under the cookie with pressure against the sheet and they remove easily without crumbling) Place on racks to cool completely. Source: Woman's Industrial Union in Boston