Real French Onion Dip

INGREDIENTS

• 2 teaspoons sugar
• 3 large yellow onions, finely diced (about 1 quart)
• 1 tablespoon butter
• 1/4 teaspoon baking soda
• Kosher salt and freshly ground black pepper
• 1/2 cup water
• 3/4 cup sour cream
• 1/2 cup mayonnaise
• 1 teaspoon lemon juice
• 1/2 teaspoon Worcestershire sauce
• 1/2 ounce finely grated Parmesan cheese
• 1 tablespoon finely sliced chives