avocado and tomato salad

Ingredients

• 1 tablespoon red wine vinegar
• 2 teaspoons dijon mustard
• 1/2 teaspoon salt (i omitted)
• 1/2 teaspoon dried oregano ( i used fresh)
• 1/2 teaspoon lemon juice
• 1/4 teaspoon white pepper
• 1 clove garlic, minced or pressed
• 1 1/2 teaspoons olive oil
• 3 tablespoons salad oil
• 3 medium tomatoes, cut into bite sized pcs
• 1 large ripe avocado
• - butter lettuce, or other soft leaf lettuce