Lemon Pickle

2 whole lemons
5 large onions, roughly chopped
4 cups white vinegar
1 cup lemon juice
3 teaspoons salt
5 cups sugar
1 teaspoon turmeric
4 teaspoons horseradish
2 lemons, zest of, finely grated
5-6 cloves garlic, crushed
2 teaspoons ground ginger

Puree whole lemons and onions with some of the vinegar until very smooth.
Place in a large non-corrosive pot with all other ingredients and bring to a boil.
Reduce heat to a simmer and cook for about 45 minutes until reduced to a spoonable consistency.
Bottle while hot into sterilised jars and seal with screw pop top lids.