Mix shortening and baking powder, cream of tartar, warm ... until creamy. Add powdered sugar about 1/2 cup at a ... beating well. Beat icing on high speed to induce ... is buttercream icing also.
Cream butter and sugar; add vanilla, eggs, Ricotta ... for 15 minutes. Ice when cool. Cream Crisco and powdered sugar. Add evaporated milk to mixture until icing is smooth. Add coloring and ice cookies.