Spinach Quiche

Ingredients

• 1 c frozen chopped spinach
• 1 c ricotta cheese
• 1/2 c parmesan cheese
• 3 eggs
• 1/2 c chicken broth
• 1 tbsp oregano
• 1/2 chopped onion
• 1 tsp salt
• 1 frozen deep dish pie shell
• 9 tsp vinegar (1/2 c)
• 1/4 c canning salt