Three Bean Salad

Ingredients

• 1/4 cup olive oil
• 1/4 cup cider vinegar
• 1 to 2 tablespoons sugar
• 1/2 teaspoon dry mustard
• Salt and freshly ground black pepper to taste
• 1 cup cooked red kidney beans, drained
• 1 cup cooked fresh green beans, drained
• 1 cup cooked fresh lima beans, drained
• 1/2 medium red bell pepper, cored, seeded, and finely chopped (generous 1/3 cup)
• 2 scallions, finely chopped (about 1/4 cup)