Grandmas Tasty Zucchini Relish - cooking recipe

Ingredients

3 large zucchini, peeled and seeded
1/2 cup table salt
5 large cooking onions, sliced fine
5 cups sugar
6 cups vinegar
2 tablespoons vinegar
4 tablespoons mustard seeds
2 teaspoons turmeric
6 tablespoons flour

Preparation

Slice zucchini as thinly as possible (food processor is a big help to do this).
Sprinkle with the salt.
Let sit overnight.
Wash and drain the zucchini.
Put in a large pot, add onions to the zucchini and mix well.
Add sugar and 6 cups vinegar.
Cook on a medium-high heat, stirring often-It will easily scorch because of the sugar content.
In the meantime, in a separate dish mix together the mustard seed, turmeric and flour well. Add the 2 tbsp of vinegar to make a runny paste-You may need to add more vinegar.
Add mixture to pot and stir constantly.
Continue to cook mixture until it thickens (approx. 1 - 1 1/2 hour).
Scoop into sterilized jars and seal.