How to cook a top-notch frittata - Delicious Living

Ingredients

• 1 cup sherry vinegar
• 1 tablespoon diced shallots
• 1 teaspoon Dijon mustard
• 3 tablespoons honey
• 3 cups olive oil
• 1 teaspoon salt
• 1 teaspoon black pepper
• 4 tablespoons olive oil
• 1 cup spinach
• 3 to 4 egg whites, beaten
• shredded Gruyere, for sprinkling
• 1 cup rocket lettuce
• salt and pepper, to taste
• 2 tablespoons olive oil
• 1/4 cup cherry tomatoes