I know I have read this somewhere but for the life of me can't find it!!!
To make a boxed cake more moist, can I add buttermilk to the mix? If so how much??

If I use a boxed mix I will use buttermilk for the water/milk component of it...it is a little heavier but very moist and good tasting!!

Box cakes are moist anyway, and I don't think adding buttermilk gives it any added moisture. The buttermilk is used to give it more of a "made from scratch" taste. To doctor a box devils food cake with buttermilk, use 1 1/3 c. buttermilk instead of the water. Add the other ingredients as directed. I also add a teaspoon of vanilla and 2 to 3 TBSP unsweetened cocoa. I used this for my daughter's birthday last month, and it tasted great. In my opinion, buttermilk doesn't work well with a box white cake.

I use buttermilk when I make a red velvet cake and I just want to crawl in the oven and smell it up close and personal while it is baking!!! It is sooooooo good!!! I use the amount stated on the box for water. Oh, my gosh, you HAVE to try it!!

I use a doctored box cake mix and I add 1 cup of buttermilk. No water or other milk.

I'm going to use a DH devils food or chocolate mix. What would I do to doctor it up?

My previous post as the instructions for doctoring a devils food cake. It is from the Cake Doctor.

Never looked at Cake Dr...gona have too!!
Thanks