AI would like to do a cake with the cake itself being different colors for sack layer. How do I color the batter? Do I use gel coloring? How would I get a true red? Thank you, Eva

I have done two rainbow cakes.  I used grocery store food colors because the liquid is actually easier to mix into the batter than gels.  For a true red I used a bit of lorann red velvet emulsion because it stays true without going pink.  HTH

http://cakecentral.com/g/i/2925633/a/3305183/a-rainbow-cake-for-the-same-little-girl-that-got-the-thomas-the-train-cake-for-her-birthday-last-year-the-cake-started-as-a-white-white-cake-that-would-have-made-three-9-inch-layers-it-was-colored-with-liquid-grocery-store-colors-except-for-the-red/#order=1&albumId=3305183&nextId=2925643&prevId=false&imageId=2925633&imageESOId=7307045&fullUrl=%2Fg%2Fi%2F2925633%2Fa%2F3305183%2Fa-rainbow-cake-for-the-same-little-girl-that-got-the-thomas-the-train-cake-for-her-birthday-last-year-the-cake-started-as-a-white-white-cake-that-would-have-made-three-9-inch-layers-it-was-colored-with-liquid-grocery-store-colors-except-for-the-red%2F%2F&fullSrc=http%3A%2F%2Fcdn001.cakecentral.com%2Fc%2Fc5%2F900x900px-LL-c5b7da06_97e.jpeg&thumbSrc=http%3A%2F%2Fcdn001.cakecentral.com%2Fc%2Fc5%2F50x50px-ZC-c5b7da06_97e.jpeg&description=A+rainbow+cake+for+the+same+little+girl+that+got+the+Thomas+the+train+cake+for+her+birthday+last+year.++The+cake+started+as+a+white+white+cake+that+would+have+made+three+9+inch+layers.++It+was+colored+with+liquid+grocery+store+colors+except+for+the+red+layer+for+which+I+used+a+few+drops+of+Lorann+red+velvet+emulsion.++The+filling+is+white+chocolate+buttercream+and+the+frosting+is+white+chocolate+sour+cream+ganache.++The+exterior+is+MMF+decorated+with+food+writer+pens.++The+crayons+were+rice+cereal+treats+covered+with+fondant.&original=http%3A%2F%2Fcdn001.cakecentral.com%2Fc%2Fc5%2Fc5b7da06_97e.jpeg&setName=&urlSlug=a-rainbow-cake-for-the-same-little-girl-that-got-the-thomas-the-train-cake-for-her-birthday-last-year-the-cake-started-as-a-white-white-cake-that-would-have-made-three-9-inch-layers-it-was-colored-with-liquid-grocery-store-colors-except-for-the-red

http://cakecentral.com/g/i/2885415/a/3281903/happy-birthday-abbey-girl/sort/display_order/#order=6&albumId=3281903&nextId=false&prevId=2885409&imageId=2885415&imageESOId=5921618&fullUrl=%2Fg%2Fi%2F2885415%2Fa%2F3281903%2Fhappy-birthday-abbey-girl%2F%2Fsort%2Fdisplay_order&fullSrc=http%3A%2F%2Fcdn001.cakecentral.com%2Fb%2Fb9%2F900x900px-LL-b9d2914d_90g.jpeg&thumbSrc=http%3A%2F%2Fcdn001.cakecentral.com%2Fb%2Fb9%2F50x50px-ZC-b9d2914d_90g.jpeg&description=&original=http%3A%2F%2Fcdn001.cakecentral.com%2Fb%2Fb9%2Fb9d2914d_90g.jpeg&setName=&urlSlug=happy-birthday-abbey-girl