Vietnamese Beef and Pickled Mustard Greens Soup (Canh dưa bò)
Vietnamese beef with pickled mustard greens soup (canh dưa bò) is a traditional soup from Northern Vietnam. It is an easy, comforting and flavorful soup with a balance of sour and savory flavors.
Slice beef against the grain into slightly thick pieces, about ¼-inch thick. Place in a mixing bowl and toss with minced garlic, ¼ teaspoon salt, black pepper and ½ teaspoon oil. Set aside to marinate briefly.
Rinse the pickled mustard greens under water then pat dry. Remove the tough stems and chop into small pieces, about 1-inch wide.
Place a pot over medium heat and once it is hot, add some oil to lightly coat the bottom. Add minced shallots and sauté until fragrant.
Increase the heat and add the beef. Sauté until the beef is almost no longer pink. Transfer to a plate.
Return the heat to medium and add the chopped pickled mustard greens. Stir and cook for a couple of minutes, then add the tomato wedges. Continue to cook for another 2-3 minutes until tomatoes start to soften and release juice.
Add water and the remaining salt to the pot. Bring it to a boil and then lower the heat to maintain a simmer. Cover and cook for 30-40 minutes until the beef and pickled mustard greens reach your desired texture and the flavors come together.
Season the soup with fish sauce to taste. Transfer to serving bowls and serve right away with rice.
Notes
Traditionally, the soup is made with beef cuts that have a lot of tendons, fat, and connective tissues. The more connective tissues the better as these parts will become tender when cooked with the pickled mustard greens.