Cover potatoes with water in a 4-quart saucepot. Bring to a boil over medium-high heat. Add 1 tablespoon salt. Reduce heat to low and simmer 20-30 minutes or until potatoes are tender. Drain and cool slightly. Slice into 1/4-inch thick slices.
Combine Vegenaise, vinegar, jalapeno peppers, 2 teaspoons salt, and black pepper in a large bowl. Stir in remaining ingredients and toss gently to coat. If desired, season with additional salt and pepper. Serve chilled or at room temperature.