TEXAS CAVIAR

1 (16 oz.) pkg. dry black-eye peas
1/2 cup cider vinegar
1/3 cup olive or salad oil
1 tbsp. salt
2 tsp. sugar
1/4 tsp. ground red pepper
1 small garlic clove, minced
1/2 cup chopped parsley
3 green onions, minced
2 celery stalks, thinly sliced
1 hard cooked egg, chopped for garnish