She forgot the egg?
AND the baking powder.
Almost as bad as when a SIL 'substituted' baking soda for baking powder (she was out) in her Lemon Drop Cookies. It became quickly clear that they were Don't Drop Them Cookies.
If you soaked them in hot hot coffee for about 10 minutes, you COULD get a nibble off the edge of them, without having to drill and use blasting powder.