Roast-beef And Broccoli Salad With Creamy Horseradish Dressing

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Details

11 Ingredients

• 1 1/2 lbs broccoli
• 2 Tbsps white-wine vinegar
• 1/4 cup drained bottled horseradish
• 2 tsps Dijon mustard
• 3/4 tsp salt
• 1/8 tsp fresh-ground black pepper
• 1/2 cup olive or other oil
• 3 Tbsps sour cream
• 3/4 lb thick-sliced (1/8 inch) roast beef, cut crosswise into 1/2-inch strips
• 2 1/2 cups halved cherry tomatoes
• 6 scallions including green tops, cut diagonally into thin slices