Sift together flour, sugar, salt, baking powder, and milk into mixer bowl.
Add shortening and water to dry ingredients; beat at low speed 1 minute until blended. Scrape down bowl; continue beating 2 minutes.
Combine eggs, water, and Lemon. Add slowly to mixture while beating at low speed about 2 minutes. Scrape down bowl. Beat at medium speed 3 minutes.
Lightly spray each pan with non-stick cooking spray. Pour batter into each sprayed and floured pan. Spray paper cups for cupcakes fill cups ⅔ to ¾ full.
Sheet cakes using a convection oven, bake at 325 F. for 25 to 30 minutes or until done.
Cupcakes: Using a convection oven, bake at 325 F. for 20 to 25 minutes or until done
Cool; frost if desired.