Blondie's Grandma's Rhubarb Ketchup

• 4 cup diced fresh or frozen rhubarb
• 3 medium onions, chopped
• 1 cup white vinegar
• 1 cup packed brown sugar
• 1 cup sugar
• 1 1/2 to 2 teaspoons salt
• 1 tsp ground cinnamon
• 1 tbsp pickling spice
• 1 can (28 ounces) diced tomatoes, undrained

1. In a large saucepan, combine all ingredients.
2. Cook for 1 hour or until thickened, making sure to stir it often so it doesn't burn.
3. Cool.
4. Refrigerate in covered containers.
5. *This recipe makes about 6 to 7 cups.
6. *

frozen rhubarb, onions, white vinegar, brown sugar, sugar, salt, ground cinnamon, pickling spice, tomatoes

Taken from cookpad.com/us/recipes/339277-blondies-grandmas-rhubarb-ketchup (may not work)