Rhubarb Steak Sauce - cooking recipe

Ingredients

8 cups chopped rhubarb
3 cups diced onions
2 cups white vinegar
2 1/2 cups brown sugar
1 teaspoon cinnamon
1 teaspoon allspice
3 garlic cloves, minced
1 teaspoon salt
1 teaspoon fresh ground pepper

Preparation

Combine all ingredients in a large saucepan.
Bring to a boil.
Reduce to low heat and let simmer until well thickened.
Let cool and refrigerate.
I am guessing at yield and prep time.