Spinach, Strawberry, and Hearts of Palm Salad

INGREDIENTS

• 1 teaspoon salt
• 1/2 small red onion, grated
• 1 cup vegetable oil
• 1 1/2 pounds fresh spinach, washed and torn into pieces
• 1 can hearts of palm, drained and chopped
• 1 1/2 tablespoons poppy seeds
• 2 cups strawberries, stemmed and sliced
• 1 cup chopped walnuts
• 1/2 teaspoon paprika
• 1/3 cup cider vinegar
• 3/4 cup sugar
• 2 tablespoons fresh lemon juice
• 1 teaspoon dry mustard