For example, here's my Ginger Orange Dortmunder...and how I built it from the extra light DME base.
7# X-Light Dry Malt Extract
1# American Crystal 30L
8oz Dextrin (CaraPils) Malt
hops
60 1.0 Hallertau pellet 4.2
60 1.0 Northern Brewer pellet 6.6
20 1.0 Cascade pellet 5.8
0-5 1.0 Cascade pellet 5.8
Add approximately 2 ounces of Orange peels (I used a mixture of orange and clementines-the clementines smelled more "orangy"), one ounce of gingerroot (I used a potato peeler), and 2 whole cloves in a hopsack @ 15 minute. At flameout ad danother hopsack with 2 ounce of peels, 1 ounce gingeroot and 1 clove. Add half cup of orange juice boiled for 15 minutes when racking to secondary. Great summer brew...
1.071 (1.063 to 1.074)
Final Gravity
1.018 (1.015 to 1.019)
Color
9° SRM
(Gold to Copper)
10.8 HBU
44.9 IBU (Corrected for 3 gallon boil)
7.1% A.B.V.
If you don't already have a brewing software program beercalculus is a nice online program to use, you can then store your recipes on their sister site hopville.
http://beercalculus.com/recipe
I was the one who had the creator add xtra light dme to his ingredient list.