Refrigerator Cucumber Slices - cooking recipe

Ingredients

4 lbs. (about 6 large) cucumbers, cut into 1/4-inch slices
3 medium onions, cut into 1/8-inch slices
3 c. sugar
3 c. cider vinegar
4 t. canning/pickling salt
1 1/2 t. mustard seed
1/2 t. alum

Preparation

In a large container, combine cucumbers and onions. In a large bowl, combine the remaining ingredients, stirring until the sugar is dissolved. Pour over cucumbers and onions. Mix well. Cover and chill overnight. May be refrigerated for up to 2 weeks. Yields about 2 1/2 quarts.