A few bricks Use standard mortar. After it dries create some mud from the dirt directly under the wall rub it into the mortar. Let it sit for a few days and wash it off.

Have a big job?

See this episode(scroll down and watch the clips):

http://www.bobvila.com/BVTV/HomeAgain/Episode-1404.html

My wife wants to remove 1/2 of the side addition and what remains to be properly built of matching brick for a master bath and closet.