1cook milk and flour in a small pan. cook until thick (stirring constantly) I usually do this step, right after I put the cake in the oven - this mixture must be COMPLETELY COLD before continuing to the next step.
2Put thickened milk mixture in a mixing bowl,
add stick of butter and beat 4 min.
add crisco then beat 4 min.
add sugar (slowly - just a little at a time) then beat 4 min.
add salt and vanilla and beat 4 min.