Simple Marinated Shrimp

Ingredients

• 2 pounds cooked medium shrimp, peeled and deveined
• 1 medium red onion, sliced and separated into rings
• 2 medium lemons, cut into slices
• 1 cup pitted ripe olives, drained
• 1/2 cup olive oil
• 1/3 cup minced fresh parsley
• 3 tablespoons lemon juice
• 3 tablespoons red wine vinegar
• 1 garlic clove, minced
• 1 bay leaf
• 1 tablespoon minced fresh basil or 1 teaspoon dried basil
• 1 teaspoon salt
• 1 teaspoon ground mustard
• 1/4 teaspoon pepper